Hey Jojo, just wondering, what kinda tools did you use to *Port and Polish* the sleeve? How much meat did you take off, and which ports did you take it from? Ive ported a few 23cc and 30cc performance 2 strokes before, and i used diamond bits to cut the ports, i didnt polish them do too the fact that the diamond bits are so fine and precise, polishing wasnt required. I ported a RB Concept motor for a guy that was racing 1/8th scale buggys, and used the same bits, turned out great, the buggy had loads of torque, and revved alot higher. Ofcourse, tuning adjustments had to made to go with added port volume (Richer settings), but once the engine was tuned for peak performance, she hauled!! Let me know....

Anthony