My tuner/mentor solved the problem of a petcock by epoxying a valve in the bottom of the tank. Works great and saves alot of weight. Only problem is I need to run an in-line shut off, but that's alot cheaper than a petcock. The tires are mounted on the rims and balanced, if my shocks would just come in I'd have a rolling bike. Still need carbs and coils to run though. I'm getting there.