I have a new BME 50 that has 20 oz. of fuel through it. I flew it set rich the first flight then began to lean it out on the second flight. Everything worked great. I went to start the engine for another run and now it pops with the choke on, turn the choke off and it runs lean for a second and dies. So I figure it's not getting enough fuel. I first checked my tank to make sure everything worked correctly and everything checks out there. If I blow through the vent tube gas comes out the pick up line no problem. I decided to open the high end needle, no joy. Opened the low end needle, still no joy. I took the entire carburetor apart to check for debris and found none. I have been running a micro screen type filter on the pick up line so I would be shocked if any debris got it that way. I did put everything back in it's original configuration on the carb so I don't think that's it. I also have other gas engines so I am familiar with them but this has got me stumped. I checked my ignition battery and it checks good. I am about ready to run a separate gas tank to completely eliminate that possibility and go from there. Anyone have any other ideas?