for some god-forsaken reason i can't get the rear suspension to work properly; it's way too soft and bouncy, and the front suspension is supposed to be an unequal length double wishbone, but i can't get it to work either, the attempts i've made have been way too stiff, and the one attempt that was perfect wouldn't work on the other side. i messed around with connections for ages and couldn't get it to work.

Here's the link if you want to help:
pls