hi i bought an 80cc big bore kit for an ar50 and cant get it to run right, i have a 28mm carb on it at the moment, an ar80 has an 35mm carb on it, the reed block, is 14mm on an ar80 it is 18mm i know where there is an 80 reed block i can buy, i have tried up jetting my current carb and cannot power the kit, it will tick over fine, but when i try to put a load on it, it revs up slowly, and will not move hardly when i try to ride it, do u think i could get it to work if i put the 18mm reed block on? and upjetted it? rev 'n' rips suck, get ya self a geared bike!