2 track cams are set, there is no real tuning options aside from rest and nocking point, like a couple of others had mentioned above. Some systems have way more lean than others. Elite was notorious for cam lean but I think they have corrected that here lately and are pretty sweet. New breed has very little. Others are better, others are worse. Obsession has some but isn't too bad. The key in going that route is to have the correct shaft/spine and the correct DL. Those two items are paramount unless you want to get into shimming axles and swapping crap around like that. My new breeds seem to shoot pretty sweet bullet holes as long as I am in factory spec.