Okay so I put a new top end on a K5 89-04 mismatched years used Millennium Tech re-plated 88MM, brand new 39mm Keihin PWK 165 main 58 slow 3rd clip from top air 1.5 live in Ocala FL, New Gnarly Desert Pipe, Nature friendly muffler, New boyesen reed cage/ intake, passed air and vacuum tests, idles good, revs good, sounds good, runs okay down low but doesn't seem to have much hit to it. Up high it kinda just skips over its power-band in 4th, 5th. Black oil running out the muffler. Ive been having trouble with for a little while now. Tried a lot of different things nothing seems to change it. I 95% sure I put the PV in right, the side lever pulls when I rev it. I read some where on here that the boyesen reeds are more for low, did I mess up pairing it with the desert exhaust? I'm out of ideas, suggestions?