Mesh Car Flinging Problem

So recently i have been making a race game with a couple of friends and we have been using the new roblox racing game template car and i ran into this problem. I have modified the code of the car a bit yes but not the model and it just keeps flinging when i touch it. Thanks in advance.

edit: heres a video, it normally doesnt fling like that and just jumps around but you get the idea: