Chassis shaking (NOT wheelspaz)

^ Has anyone found a solution to this? Im currently using independant suspension with a chassis weight of 750 and wheel weights of 80. When i start to gain speed, my chassis wobbles preventing me from going any faster. Similar to wheelspaz, but its the chassis this time.

Also heres my suspension settings right now:
Constant = 32000
Damping = 2500

I have the exact same issue with a gokart chassis with extremely similar settings.

AAAAANDDDDDDDDD NO RESPONSEEEEE rip chassis