I will try and get the lingo correct..... I just rebuilt all six carbs with kits after having the boat sit for roughly a year. I did this because when you primed the bulb, fuel would leak out of 5 of them. After successfully rebuilding I am now having a issue with fuel leaking behind (between butterfly's and reeds). It appears that if I turn the Red valve straight down (6 O'clock) the problem goes away. I would figure this may just be the choke, but am curious when you would need this valve turned in any other position???? Any ideas? Thanks