I usually run in 4wd as it will pull its way around the corner better. It is tricky/difficult to keep the front wheels engaged. The rear tires have to be spinning approx. 20% faster then the front to engage the front diff. I have learned to brake before the turn & keep it pinned while turning, not always the easiest thing to do, so I am trying very hard to improve the understeer situation. More rear air pressure helps quite a bit. Skinny rear tires helps a little, not as much as I expected though. Now I am working with camber settings & the last thing I know to do is skinny up the rear track. I have also experimented with spring rates & a little with the front swaybar but did not get that great of an effect out of these as far as understeer is concerned.