[Solved] Why aren't animations replicating with my custom character?

Hi, so I'm trying to make something that allows someone to have an r6 hitbox, while keeping their R15 appearance and animations. To do this, I've made their character R6, made them invisible, made a copy of what their actual R15 character should look like, welded their root parts together, and put the R15 rig inside of their character (as a child), and finally I modified the animation script so it would play the animations on the fake r15 character instead. The modified animation script is too long to post here, but the server-side script isn't too long.

local function newchar(plr)
	local uid = plr.UserId
	local charinfo = game:GetService("Players"):GetCharacterAppearanceInfoAsync(uid)
	local avatartype = charinfo.playerAvatarType
	
	if avatartype == "R6" then
		plr:LoadCharacter()
		if not plr.Character then
			plr.CharacterAdded:Wait()
		end
		local connection
		connection = plr.Character:WaitForChild("Humanoid").Died:Connect(function()
			connection:Disconnect()
			newchar(plr)
		end)
	elseif avatartype == "R15" then
		local char = game:GetService("ServerStorage").CustomChar:Clone()
		char.Name = plr.Name
		char.Parent = workspace
		plr.Character = char
		local humdesc = game:GetService("Players"):GetHumanoidDescriptionFromUserId(uid)
		-- Makes the character invisible
		plr:ClearCharacterAppearance()
		for i,v in pairs(char:GetChildren()) do
			if v:IsA("Part") then
				-- Removes meshes that may cause a problem in the next step
				for i2,v2 in pairs(v:GetChildren()) do
					if v2:IsA("BlockMesh") or v2:IsA("SpecialMesh") then
						v2:Destroy()
					end
				end
				-- Makes invisible
				Instance.new("SpecialMesh", v).Scale = Vector3.new(0,0,0)
				-- Hide name
				char.Head.Transparency = 1
			end
		end
		local fchar = game:GetService("ServerStorage").R15:Clone()
		fchar.Name = plr.Name
		fchar.Parent = game:GetService("ServerStorage").Temp
		fchar.Humanoid:ApplyDescription(humdesc)
		for i,v in pairs(fchar:GetChildren()) do
			if v:IsA("BasePart") then
				game:GetService("PhysicsService"):SetPartCollisionGroup(v, "NonCollidable")
			end
		end
		fchar.Humanoid.PlatformStand = true
		fchar.Parent = char
		local weld = Instance.new("Weld")
		weld.Part0 = char.HumanoidRootPart
		weld.Part1 = char[plr.Name].HumanoidRootPart
		weld.C0 = CFrame.new(0,char[plr.Name].Humanoid.HipHeight-2,0)
		weld.Parent = char.HumanoidRootPart
		local connection
		connection = char.Humanoid.Died:Connect(function()
			connection:Disconnect()
			newchar(plr)
		end)
		for i,v in pairs(fchar:GetChildren()) do
			if v:IsA("BasePart") then
				v:SetNetworkOwner(plr)
			end
		end
	end
end
game:GetService("Players").PlayerAdded:Connect(newchar)

the place is here by the way (it's uncopylocked so you can view it in studio).

oh also I'm just looking for any suggestions on what I could try in order to fix it.

Thanks

Nobody else will likely see this, but I might aswell answer my question. I've found out that inorder for an animation to be displayed, an animator must be inside of the humanoid. If a script tries to load an animation without it, it creates one inside of the humanoid. It should be well known that if a local script tries to create this animator, it won't be replicated to the server and therefore there won't be an animation displayed to other players. The solution is to create an animator from the server before trying to animate from the client.