Bubble Teleports Above Ground?

I've been designing a bubble script for a game that goes in front of your head and increases in size and damage based on a stat, and it increases faster based on a speed stat. However, it seems to hover over the ground instead of next to your head. I assume this is because it resizes faster than it cframes it in front of your player, but honestly I have no idea.

Here's the code:

local tool = script.Parent
local name = game.ReplicatedStorage:FindFirstChild("NameVal").Value
local player = game.Players:FindFirstChild(name)
local char = game.Workspace:WaitForChild(name)
local head = char.Head
local touchhit = script.TouchHit
local bubblegum = Instance.new("Part")
touchhit.Parent = bubblegum
bubblegum.Transparency = 0.4
bubblegum.CanCollide = false
bubblegum.Size = Vector3.new(1, 2, 2)
bubblegum.Shape = "Ball"
bubblegum.BrickColor = BrickColor.new("Carnation pink")
bubblegum.BackSurface = "Smooth"
bubblegum.BottomSurface = "Smooth"
bubblegum.FrontSurface = "Smooth"
bubblegum.LeftSurface = "Smooth"
bubblegum.RightSurface = "Smooth"
bubblegum.TopSurface = "Smooth"
bubblegum.Anchored = true

function onUsed()
	script.Parent.Enabled = false
	local thing = 1
	local size = player.Stats.Size.Value
	local speed = player.Stats.Speed.Value
	local clone = bubblegum:clone()
	clone.Parent = game.Workspace
	spawn(function (follow)
		repeat
			coroutine.yield()
			clone.CFrame = head.CFrame + head.CFrame.lookVector * thing
		until done == true
	end)
	for i=1, size do
		clone.Orientation = head.Orientation + Vector3.new(0, 90, 0)
		clone.Size = clone.Size + Vector3.new(1, 1, 1)
		thing = thing + 0.5
		wait(1 - (speed / 100))
	end
	done = true
	clone:remove()
	done = false
	script.Parent.Enabled = true
end

function onActivated()
	if not tool.Enabled then
		return
	end
	tool.Enabled = false
	onUsed()
end

script.Parent.Activated:connect(onActivated)

Here's a video of what happens (I increased my size and speed a lot to make it more noticeable): https://www.youtube.com/watch?v=EeT1wBio7co

When you change the size of a part it moves the part if it collides with another part. To fix this you need to reset the CFrame back in front of your head immediately after changing the size.