help with character scale script!?

I trying to make a script when I click on the gui I become a giant. Everything works except the HumanoidRootPart which doesn't stick to the torso and ends up falling of the map? Any sugguestion that I could do to fix it? I'm still learning to code.

script.Parent.MouseButton1Down:connect(function()
local scale = 5
local hit = game.Players.LocalPlayer.Character
local bin =  game.Players.LocalPlayer.Character

local la = bin["Left Arm"]
local ra = bin["Right Arm"]
local ll = bin["Left Leg"]
local rl = bin["Right Leg"]
local h = bin.Head
local t = bin.Torso
local s = bin.HumanoidRootPart

local sizeup = {t,h,ll,rl,ra,la,s}
for i = 1, #sizeup do
sizeup[i].Size = Vector3.new(sizeup[i].Size.x * scale,sizeup[i].Size.y * scale,sizeup[i].Size.z * scale)
sizeup[i].TopSurface = 0
sizeup[i].BottomSurface = 0
sizeup[i].RightSurface = 0
sizeup[i].LeftSurface = 0
sizeup[i].FrontSurface = 0
sizeup[i].BackSurface = 0
end

local sizex = t.Size.x/2
local sizey = t.Size.x/2
local sizez = t.Size.x/2

local ls = Instance.new("Motor")
ls.Parent = t
ls.Name = "Left Shoulder"
ls.Part0 = t
ls.Part1 = la
ls.MaxVelocity = 0.1
ls.C0 = CFrame.new(-sizex - la.Size.x/2,la.Size.y/4,0) * CFrame.fromEulerAnglesXYZ(0,-3.14/2,0)
ls.C1 = CFrame.new(0,la.Size.y/4,0) * CFrame.fromEulerAnglesXYZ(0,3.14/2,0)

local rs = Instance.new("Motor")
rs.Parent = t
rs.Name = "Right Shoulder"
rs.Part0 = t
rs.Part1 = ra
rs.MaxVelocity = 0.1
rs.C0 = CFrame.new(sizex + ra.Size.x/2,ra.Size.y/4,0) * CFrame.fromEulerAnglesXYZ(0,3.14/2,0)
rs.C1 = CFrame.new(0,ra.Size.y/4,0) * CFrame.fromEulerAnglesXYZ(0,3.14/2,0)

local lh = Instance.new("Motor")
lh.Parent = t
lh.Name = "Left Hip"
lh.Part0 = t
lh.Part1 = ll
lh.MaxVelocity = 0.1
lh.C0 = CFrame.new(sizex - ll.Size.x*1.5,-(ll.Size.y/4)*3,0) * CFrame.fromEulerAnglesXYZ(0,-3.14/2,0)
lh.C1 = CFrame.new(0,ll.Size.y/4,0) * CFrame.fromEulerAnglesXYZ(0,3.14/2,0)

local rh = Instance.new("Motor")
rh.Parent = t
rh.Name = "Right Hip"
rh.Part0 = t
rh.Part1 = rl
rh.MaxVelocity = 0.1
rh.C0 = CFrame.new(sizex - rl.Size.x/2,-(ll.Size.y/4)*3,0) * CFrame.fromEulerAnglesXYZ(0,3.14/2,0)
rh.C1 = CFrame.new(0,rl.Size.y/4,0)  * CFrame.fromEulerAnglesXYZ(0,3.14/2,0)

local n = Instance.new("Snap")
n.Parent = t
n.Name = "Neck"
n.Part0 = t
n.Part1 = h
n.C0 = CFrame.new(0,sizey + h.Size.y/2,0) * CFrame.fromEulerAnglesXYZ(0,0,0)
end)