Got a question about my idle, just installed a B303 cam, have my timing set at 12 btc. it has a problem with idling up and down about 300 rpm. and then eventualy shuts off. Is there a certain way they set the throttle at the factory? And if there is, how do they do it so I can check mine because I screwed it up the day before trying to idle it up to get rid of the problem. And can anyone help me figure out how to remedy the idle problem? any help is appreciated.