Elevator & Unanchored Car Physics Problem

I’m trying to create an elevator of which players can use to transport vehicles from one floor to another, it goes down fine but whenever the physics are asleep and It’s going up it sinks into the ground. I’ve tried using SetNetworkOwner to no avail and I have a minuscule idea of how ROBLOX physics work. If anyone could help me find a solution to make the physics work for this it would be greatly appreciated.

A video of what’s happening:

This might help