My 83 Honda express deluxe is really coming together nicely. I put a new set of rings and gaskets on it, cleaned the carb, cleaned out the muffler as best as I could and last night I installed a new gates BX31 belt. It runs about 31mph on the flats now(up from 25-26mph) and I'm wondering what else I should/could do for further improvement. I dont want to get to radical(70cc kit, crazy exhaust etc) but would like to maximize the perfomance while staying as close to stock as possible. Any suggestions are greatly appreciated.