mine does this also
the adjustable arms should have solved it.... tried adjusting them to try a few different angles????
i have stock trailing arms, stock placed mounts (kouki t series) chopped falcons and sierra shocks and my car is low as hell
i am only running what a slightly modded 20v puts out... 120hp ish atw and it tramps hard as
traction brackets/ 4 link should help
ill be making my own weld on traction brackets for my new diff, ill let you know how it goes