Which elements of this old script do I need to replace for new weapon animations?

First off, I will start by saying that I am an inexperienced scripter, but I have a background in web design. Being that I just started developing on Roblox a week ago I have been breaking down many models and learning the scripts, editing to see what makes them tick etc.

I am having troubles figuring something out. After reading countless threads I have seen many people frown on free models, so please excuse me from the get go, but alongside reading a great deal, I have been using some free models (KittehRPG) to learn through trial and error. I do use Ro-Defender, and have really limited my usage beyond figuring out these starting blocks so I can do more on my own through time.

I have had many successes over the past week, but this one here is really stumping me. I have two swords, along with two different sword scripts, and one has much improved animations. I have been trying to take those animations and drop them into the old weapon, and then applying the new animations to the old weapon.

I know they work with the model, because if I copy the improved animations themselves, as well as the script that pairs with them, and then place them in the old weapon (deleting my other script from the old model), it works flawlessly and the old weapon then uses the new animations. Unfortunately it will not then use any of my damage modifiers, xp evaluators, etc.

After tirelessly attempting to take components of the new, improved script, as well as the new animations, and applying only the animation portions of the script, while removing the old animations, and also leaving the other portions of the script still functioning, I have been unsuccessful.

Now, I already can speculate what components are triggering the animations, but after many attempts to pinpoint and edit only the needed elements, I have not had any luck. Here is the old script elements that I feel are triggering the animations:

function attack() 
    local anim = Instance.new("StringValue") 
    anim.Name = "toolanim" 
    anim.Value = "Slash" 
    anim.Parent = Tool 
end 

function lunge() 

    local anim = Instance.new("StringValue") 
    anim.Name = "toolanim" 
    anim.Value = "Lunge" 
    anim.Parent = Tool 

    force = Instance.new("BodyVelocity") 
    force.velocity = Vector3.new(0,4000,0) --Tool.Parent.Torso.CFrame.lookVector * 80 
    force.Parent = Tool.Parent.Torso 
    wait(.25) 
    swordOut() 
    wait(.25) 
    force.Parent = nil 
    wait(.5) 
    swordUp() 

    damage = slash_damage 
end 

function swordUp() 
    Tool.GripForward = Vector3.new(-1,0,0) 
    Tool.GripRight = Vector3.new(0,1,0) 
    Tool.GripUp = Vector3.new(0,0,1) 
end 

function swordOut() 
    Tool.GripForward = Vector3.new(0,0,1) 
    Tool.GripRight = Vector3.new(0,-1,0) 
    Tool.GripUp = Vector3.new(-1,0,0) 
end 

function swordAcross() 
-- parry 
end 


Tool.Enabled = true 

function onActivated() 

    if not Tool.Enabled then return end 

    Tool.Enabled = false 

    local character = Tool.Parent; 
    local humanoid = character.Humanoid 

    if humanoid == nil then return end 

    attack() 

    wait(1) 

    Tool.Enabled = true 
end 


function onEquipped() 

end 


script.Parent.Activated:connect(onActivated) 
script.Parent.Equipped:connect(onEquipped) 


connection = sword.Touched:connect(blow)

Here is the script that comes from the improved weapon:

sp = script.Parent

r = game:service("RunService")
debris = game:GetService("Debris")

anims = {"RightSlash","LeftSlash","OverHeadSwing","LeftSwingFast","RightSwingFast"}

Sounds = {{145180512, "Metal"}, {145180522, "Metal"}, {145180533, "Wood"}, {145180541, "Wood"}, {145180529, "Slash"}, {145180550, "Slash"}}

WoodSounds = {}
MetalSounds = {}
SlashSounds = {}

basedamage = 10
slashdamage = 50
swingdamage = 60
damage = basedamage

sword = sp:WaitForChild('Handle')
sp.Taunting.Value = false

local UnsheathSound = Instance.new("Sound")
UnsheathSound.SoundId = "http://www.roblox.com/Asset/?id=145180523"
UnsheathSound.Parent = sword
UnsheathSound.Volume = .2

for _,Sound in pairs(Sounds) do
    local S = Instance.new("Sound")
    S.SoundId = "http://www.roblox.com/Asset/?id=" .. Sound[1]
    S.Parent = sword
    S.Volume = .2
    if Sound[2] == "Wood" then
        table.insert(WoodSounds, S)
    elseif Sound[2] == "Metal" then
        table.insert(MetalSounds, S)
    elseif Sound[2] == "Slash" then
        table.insert(SlashSounds, S)
    end
end

function waitfor(parent,name)
    while true do
        local child = parent:FindFirstChild(name)
        if child ~= nil then
            return child
        end
        wait()
    end
end

waitfor(sp,"Taunting")
waitfor(sp,"RunAnim")
local Halt = false;
function blow(hit)
    if hit:findFirstChild("IsShield") then
        damage = 0
        pcall(function()
            if hit.IsShield.Value == "Wood" then
                WoodSounds[math.random(#WoodSounds)]:Play()
            elseif hit.IsShield.Value == "Metal" then
                MetalSounds[math.random(#MetalSounds)]:Play()
            else
                WoodSounds[math.random(#WoodSounds)]:Play()
            end
        end);
        return
    end
    if Halt then return end;
    Halt = true;
    if hit.Parent ~= nil then
        local humanoid = hit.Parent:findFirstChild("Humanoid")
        local vCharacter = sp.Parent
        if vCharacter ~= nil then
            local vPlayer = game.Players:playerFromCharacter(vCharacter)
            if vPlayer ~= nil then
                local hum = vCharacter:findFirstChild("Humanoid")
                if humanoid ~= nil then
                    if hum ~= nil and humanoid ~= hum then
                        local right_arm = vCharacter:FindFirstChild("Right Arm")
                        if right_arm ~= nil then
                            local joint = right_arm:FindFirstChild("RightGrip")
                            if joint ~= nil and (joint.Part0 == sword or joint.Part1 == sword) then
                                tagHumanoid(humanoid,vPlayer)
                                humanoid:TakeDamage(damage)
                                wait(.3)
                            end
                        end
                    end
                end
            end
        end
    end
    Halt = false;
end

function tagHumanoid(humanoid,player)
    for i,v in ipairs(humanoid:GetChildren()) do
        if v.Name == "creator" then
            v:Destroy()
        end
    end
    local creator_tag = Instance.new("ObjectValue")
    creator_tag.Value = player
    creator_tag.Name = "creator"
    creator_tag.Parent = humanoid
    debris:AddItem(creator_tag,1)
end

sp.Enabled = true
function onActivated()
    if sp.Enabled and not sp.Taunting.Value then
        sp.Enabled = false
        local character = sp.Parent;
        local humanoid = character.Humanoid
        if humanoid == nil then
            print("Humanoid not found")
            return 
        end
        SlashSounds[math.random(#SlashSounds)]:Play()
        local newanim = anims[math.random(1,#anims)]
        while newanim == sp.RunAnim.Value do
            newanim = anims[math.random(1,#anims)]
        end
        sp.RunAnim.Value = newanim
        if newanim == "OverHeadSwing" then
            damage = swingdamage
        else
            damage = slashdamage
        end
        wait(.75)
        damage = basedamage
        sp.Enabled = true
    end
end

function onEquipped()
    UnsheathSound:play()
end

sp.Activated:connect(onActivated)
sp.Equipped:connect(onEquipped)

connection = sword.Touched:connect(blow)

So to reiterate, how can I take ONLY the animation portions from the improved script and replace the old animation triggers from the old script?

The new, improved script is confusing, because it seemingly adds damage modifiers in with the animations, and this is making it very complicated pruning out ONLY the animation modifiers to apply into the old model, as I wish to retain the damage values in the old code.

Sorry for my long-winded explanation, I am just trying to be as detailed as possible as this is my first post here, and I am looking for somebody to get me on the right track. Through the past week I came across many hardships, but I have done mass trial and error and have had many successes. This one is just not co-operating.

Thanks for any help or guidance.