Hey, I got a kymco zx 50 with 2200 miles. I got the spacer in there, the revlimiter disengaged and a technigauss exhaust with roller weights installed. But the thing maxes at 41!! I know something is wrong cuz a stock kymco with the spacer replaced can hit 41, so what the hell is the exhaust doing? I'd think it would hit 47. Does anyone have any suggestions on how to get use out of my exhaust, could the roller weights be installed wrong? Do I need different parts to take advantage of the exhaust?