got my build up and going finally, but motor seems to idle really fast or die on me, when i ride it sputters like mad **** and i seem to have to keep pedaling to keep it going, also i don't seem to get much response out of the throttle. i tinker'd around with the idle screw and that seems to be an all or nothing deal. the choke has to be wide open or it dies. my fuel mix is 20/1. i read a few posts about air leaks and it seems like a good place to start also how much resistance should i be feeling in the throttle it seems as though i have little to none