Had a chance to work on 750 today ,I checked the bowl vents and they are all in place ,thanks for the help finding them , the fuel flows freely on #2 with the bowl off,I then tried switching the bowls between #1 and#2 no change after I run the bike bowl #1 is about 3/4 full and # 2 has just a little bit of fuel in the bottom,I tried removing the bowl vent hose between 2and 3 but that did not change anything .if you have any other ideas to try I would be great full thanks jerry