So i decided to invest in the simple snapple bottle carb sync that bcbobbers posted and it actually came out awesome. However, As i was hooking this and that up..i noticed that the right vacuum hose that connects the carb to the petcock to pull fuel in doesn't work with this set up. In other words, as i hooked the tank up and had the tank connected to the fuel filter, there is no hose to go from the petcock to the carb to suck fuel. I tried one time leaving it on prime for one go around and nothing. Any ideas on if bcbobbers idea works with my set up? I have a 1980 yamaha xs400 special. Heres some pictures of what i did.