I just fixed everything back up with my crankcase leak and still doesn't go fast enough for me. This is my first bike kit and I just want to cruise at 25-30 with my 250pound self on it. Is this possible with just going with a 36tooth and pedaling it a little to get it up and go? I have 7 speed so that is no problem. I just want lower RPMs and a little higher cruise speed. Mine is a 41 tooth 66/80 CC I believe. I can wind it out to about 25, but it sounds like it's going to fast after that and I ease off a little on the throttle and cruise at 23MPH without it sounding too bad. 19 or so it sounds like it's starts getting a little blubbery. It will ease along as as slow as 10 and not stall the engine. Is that about all to be expected with this drivetrain and my heavy self or can I get more?