I run with Sorex 32's
I found 45wt oil in the front and rear shocks, and Tamiya blue springs (Front) and Yellow (Rear) is a good starting point. I also have the shocks tops mounted to the outer holes at the front and the inner holes at the rear.
This is just a starting set-up, do you have oil shocks? have you added turnbuckles for steering toe-in / out etc?