A good deal of that must be the valves, I just had the 10k done and the valves were all good. Seems I saved a bundle since there was no need to adjust the valve clearance, looks like the bill skyrockets depending how many need the pucks swapped out. I spent $660 total and that included $250 for a Power Commander Dyno tune. I don't feel so bad now, seems like I got off easy. The tune was a good investment, they got an extra 9 horses and 9 foot lbs on top of what I already had by tweeking the mixture. They said you lose 10-15% through the transmission and shaft and it dyno'd out on the best run at 155bhp and 160fpt at the rear tire. The tech made it a point that I'm right on the edge of what the clutch can handle. I guess that's it for performance upgrades until I beef up the clutch. My next major expense is going to be replacing the rear shocks, I rode one with adjustables and am sold on the improvement in handling.