Trying To Move A Model To A Players Head Isn't Working?

So I am Trying To Move A Model To A Players Head But The Model Just Either moves Above or Below The Character Or Is Deleted. I Have Looked Around For Answers And Cant Find One

Here Is My Script

while true do
	wait(0.1)
	local Pos = script.Parent.Head.CFrame
	game.Workspace.ReverseBearTrap:SetPrimaryPartCFrame(Pos)
end

The Script Is Located In StarterCharacterScripts And Is A Local Script