How to make a buy model script work?

Okay so I have been trying to make this car model I have made work as a buy able model to get for real money. The car is called the Tesla, my only problem is when I buy the model it spawns broken and out of shape. please help. Here is the script:

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model = script.Parent.Parent.Parent.Tesla --Item name
Upgradecost = 1000  --Change cost to upgrade
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upgradeStuff = model:clone(Upgrader1)--
										

model:remove() --remove the ingame model. We saved a clone for later.

local ting = 0 --debouncer

function onTouched(hit)
	if ting == 0 then --check for debounce
	ting = 1 --activate debounce 
	check = hit.Parent:FindFirstChild("Humanoid") --try to find the human that touched the button

	if check ~= nil then --if toucher is a human then to following
		local user = game.Players:GetPlayerFromCharacter(hit.Parent) --get player from touching human
		local stats = user:findFirstChild("leaderstats") --Find moneyholder

		if stats ~= nil then --If moneyholder exists then
			local cash = stats:findFirstChild("Money") --Get money
			if cash.Value > (Upgradecost-1) then --If there is enough money then

				cash.Value = cash.Value - Upgradecost --remove cash
				upgradeStuff.Parent = script.Parent.Parent.Parent --put the upgrade into the game
				script.Parent.Parent:remove() -- remove the upgrade button (in case of one-upgrade only)

			end
		end
	end

	ting = 0 --remove debounce
	end
end

script.Parent.Touched:connect(onTouched) --start checking for touchers

Here are the links for proof:

C:\Users\Solrac\Documents\ROBLOX\Game Stuff\Astura with buy model button at start.png

C:\Users\Solrac\Documents\ROBLOX\Game Stuff\Astura afterwards (after bought using money).PNG

MakeJoints() Maybe

model:MakeJoints()

Instead of clone() may work, or anchor the things and weld them possibly