This is my first MB build and I decided to go with the Honda engine. After completing it I was able to ride it about 15 miles when gas suddenly started pouring out of the carb. Since it was under warranty I took it into the local Honda dealer where they put on a new carb. I thought it was fixed, but after riding it approx. another 15 miles, gas was pouring out of the carb again. I took it back to the Honda dealer again and they said they found the carb bowl was loose, so they tightened it and said that should fix it. Rode it again for approx. another 15 to 20 miles when gas again was pouring out of the carb. I've checked the float bowl and it is tight. I suspect the float must be sticking causing the gas to pour out of the carb. It seems really strange that the orignal new carb would have a float to stick, but even stranger that (if that's the cause) that the replacement new carb would also have the float to stick. I've called SG Green Motors, where I bought the engine kit, and they want to sell me a Hua Sheng carb to replace the Honda carb, saying that will fix my problem. My local Honda dealer is now saying Honda doesn't want to warranty this engine because I'm using it for something it is not designed to be used for. Sounds to me like Honda is just looking for a way to get out of their 2 year factory warranty! I don't feel I should have to buy another carb (the Hua Sheng) to replace the Honda carb. I've only got 59 total miles on this bike and the way it is now, it is a "fire trap" between my legs! Has anyone else had this problem with a Honda carb? Any input will be greatly appreciated.