Topend Procedure

before you do anything make sure your bike is CLEAN. when you are going to take out the piston make sure to put a clean rag over the hole with the rod so the clips don't fall in with the crankcase, and also check your piston for signs of scoring,blowby,etc... also check your cylinder for scratches, even fine ones. eric gorr has excellent info on how to clean and maintain your cylinder, he also has a diagnostic guide on pistons to show you what a piston should look like if a certain problem occured. good luck :)