I've got a Chinese 66cc and have just upgraded to dax's racing carb and a wrap-around voodoo expansion exhaust. My bike sounds as though its turning over but no acceleration so matter how far I open up the throttle. Pulled off the expansion chamber and a bunch of gas was in the pipe. Figured it might be a spark plug issue or mix was too rich, so I replaced the stock plug with NGK b6hs and tried to do the kill switch test for the fuel-air mix, but the plug wasnt discolored at all, looked brand new. I disconnected the kill switch and still nothing. Did I blow out the cdi? Any suggestions?