Repositioning a player model's body parts?

Hi!

Today I was making a script that makes your character model grow in size before shrinking back to its base size. My issue is with the position of the body parts after the size change occurs.

To prevent the joints from breaking I've cloned the player's character and all of it's children to a model that grows in size before taking the place of your character for several seconds before switching back. I've tested the model before making it grow in size and its body part are all perfectly positioned like a normal character model. But when the model's size has been tampered with, this happens: http://prntscr.com/cwa8c4. The player's body parts become compact, no animation occurs, and the model simply becomes a "levitating meat cube"

I've tried changing the position of the character's body parts with Vector3, but the changes don't stay, and if I attempt position the head, the player will die instantly, because the head weld will break.

Here's the function that sets the player's size:

function setSize (char, value) 
	for _, child in pairs(char:GetChildren()) do
		if child:IsA("Hat") and child:FindFirstChild("Handle") then
			child = child.Handle 
		elseif child:IsA("BasePart") then
			child.Size = child.Size + Vector3.new(value, value, value)
		end
	end
end

And here's the code used to do all of the other work:

local enabled = true 

local click = Instance.new('ClickDetector')
click.Parent = giantPart

click.MouseClick:connect(function(hit)
	local char = hit.Character
	local player = game.Players:GetPlayerFromCharacter(char)
	local cenable = true
	if char and cenable then
		char.Archivable = true
		local m = char:Clone()
		if m then
			cenable = false
			local head = char:FindFirstChild("Head")
			local face = head:FindFirstChild("face")
			if enabled and head and game.Players:GetPlayerFromCharacter(char) and m then
			enabled = false
			setSize(m, 5)
			m.Parent = game.workspace
			player.Character = m
			if player.Character == m then
				game.workspace.Camera.CameraSubject = player.Character
				game.workspace.Camera.CameraType = "Custom"
			end
			wait(5)
			char.Parent = game.workspace
			char.Parent = player.Character
			player.Character = char
			char.Parent = game.workspace
			char:MoveTo(player.Character.Torso.Position)
			m:Destroy()
			if player.Character == char then
				game.workspace.Camera.CameraSubject = player.Character
				game.workspace.Camera.CameraType = "Custom"
			end
			wait(2)
			enabled = true
			cenable = true
		end
		end	
	end	
end)

What I want to know is why this is happens, and hopefully how to fix it.

Please keep in mind that the player's character model has been replaced with a cloned model that's size has been changed to the value input.

Thanks!

You need to add place markers that are non-CanCollide and transparent to the arms and legs positions before you move them, then after the growing has finished, just set the various parts positions to the place markers positions. then destroy all the place markers and extra model. i would add it to your code is more complicated than what im used to. Good luck though :)