Volition, large, bumpy, dirt tracks are probably one of the toughest places to run a 2wd buggy. I think you need to make a effort to switch your 4wd thinking off when switching classes (I know, it's tough to do). My personal opinion is that if someone tells you the servo is too fast and should be slowed down, it is a bandaid for another issue. The VAST majority of folks wouldn't be able to tell the difference between 0.08 and 0.07. I'm assuming you have been in contact with Ray Munday about the Australia setups? That dude knows his stuff!