I set fast lap last night with my xb4 it was driving awesone. I made a few changed to get more mid and exit steering. i took the sway bar off the front and a washer off the c hub. it was good at the start of practice but had a little chassis slap so i went from stock oil to 40wt front and 35 rear. it seemed to calm the car down a little bit to. i moved the rear hubs forward becuase it seemed a little loose on exit and it made it a little tight but by the time the main came the track had dried out and the car had great turning could get on the gas early and feel planted and it was awesome. im very pleased with how it is driving i need to get some more laps in and try some different setups on it. What tires are you guys running front and rear? i was bk bars in the rear and scrubs in the front