while breakin in a few of my new motors I managed to track down a cheap cheap new piston and sleeve set for my old faithful jp black mod. the new sleeve is a non modified novarossi job. I was wondering would it be possible to replicated the sleeve modifications diy style which were carried out by jp on the old sleeve?? This motor will be a backup, but it would be cool to get it running as fast as it did b4.

cheers