I have a 01 that runs great on idle and thru the mid range, but seems to be really flat on the top. Like its not getting enought fuel or air. I'm running T-5's,+2 timing, new top end (.20 over), Gorr porting, srp cdi, Cool head 19cc domes, K&N pod filters, V-Force 3 reeds, CPW 30mm Carbs.Now here is where it gets goofy.On the carbs the slides don't open all the way up,there is not enought room in the neck,Second I ride at 1300ft,so I thought 160 mains were a good start, and the plugs looked nice and brown,but I wanted to see how high I could go, now I'm at 178 and the plugs are just a little bit darker brown.Mixing at 36to1. The air screws don't do anything, .5 to 4 turns it runs the same. It starts great, idles great, revs quick, low to mid runs perfect, no misses or lag, then hits the top and I get passed by 450's.Tried +4 timing still the same.No air leaks, clip in 4th position. Would really like some help.