when do you guys suggest i rebuild my top end? How long can a banshee go before rebuilding? I bought my bike a year ago and run 32:1 castor 927, i rode alot stock and just yesterday put on my toomey t-5's and noss coolhead with 21cc domes........still starts one kick and runs great but how will i know when i have to do piston and rings?will there be a substantial loss in power? Is the time coming soon, or does my engine have alotta life in it? thanks