I got to race mine for the first time tonight. Having never driven a 4x4 before, this truck took a little getting used to. The only upgrades I have on the truck are the vented outer slipper hub and outer high torque pad. I too was having "punch" issues. I turned the slipper nut down about 3/8ths of a turn and it seemed to help. The steering radius is nuts. It turns way tighter than my 2wd but I was having traction roll issues at times. I don't know the exact ride height but my front and rear bones are level. Front shocks are turned all the way up and my rears show 4-5 threads. Stock fluid. After an 8 min main the motor temped at 120 and esc at 130. I ran 7k oil in the front diff and 3k in the rear. Overall I am very happy with this truck.
I have never owned a 4x4 before so any tips would be greatly appreciated for improvement. Its a little hard to go off the set up sheets since they seem to all be centered around sway bars that are yet to be released.
Track: High bite, blue groove, indoor track outbackraceway.com
Motor/esc: Castle 3800kv/MMP
Servo: XP ds1015
Tires: Green JC Subcultures