there are a couple of ramps that you must space closer together
if not then the wheel gets caught between 2 ramps [image 2], then as soon as you move, it throws your car into a roll [image 1]. Plus, I added my replay.
Thanks for telling me. I didn't roll at all on the jumps. Anyway, here is my
replay and an updated version of the layout.
P.S. I recommend that you use the RB4 with this setup.