This might be related to my previous post below about the leaking petcock but I think it might be a totally different problem. Basically, I've removed the petcock diaphram so that fuel flows freely down the lines. No more vacuum hose. I sealed it with a makeshift gasket so NO MORE LEAK either. I installed a clear plastic filter on each line right out of the petcock. Here's the problem... the rear-most fuel filter fills up nicely while the front-most stays almost empty. Now, if I tip the tank forward then the front filter fills up all the way but the rear one empty's out. When I take her for a ride she'll last the 3 minutes perfectly and then starve. I'm assuming she's living off the float bowls but not replenishing. When I watch the filters closely, you can clearly see the fuel easily flowing into the full filter but not the empty one. When I tip the tank it's vice versa. My question is, by installing the filters does this mean that the suction from the carbs that was once enough to draw gas is now too small? Do I need to somehow increase the 'pull' power from the carbs? And why aren't the lines drawing fuel equally from both sides of the petcock... only from the side which is tipped? I'm pretty sure there's no blockage in the petcock since I can easily blow air through one and out the other and, like I said, when I disconnect both lines fuel flows quickly from both. BTW, here's a quick little test I did. I waited for the bike to start starving and watched as the one filter emptied. I shut her off and waited to see if any fuel flowed into the empty filter. Nothing. But as soon as I disconnected the filter from the petcock a gush of fuel came out. Any ideas would be most helpful!