Zilla, sounds like you are going to have one wicked ride there. As for your leaking carbs, sounds like the same problem I ran into a while back. I solved my issue by simply removing the carbs and removed the needle and seat and thoroughly cleaning them. You either acquired a piece of dirt or maybe have dried/crusted fuel in your seat. You could reset the float level until the cows come home, but it will not change a thing. You must remove the carbs and then the seats, spraying the carbs on the bike will not work. Think of it this way, they did not leak before the new combo, so most likely from shaking things up (gas tank/carbs) you picked up some dirt along the way. Good luck, let us know.