if this happened once, even though it is major, it may be a one time thing. I run the moki 2.10 on my edge. I know it is severly sensitive to fuels and plugs. I run all day long @ 5% Omega. The low end is so sensitive that its rediculas but after my second flight I havent had any problems what so ever. No matter what the manuver. I have been in all kinds of temps. I run the OS #3 plug. no pump. Medium tubing, nothing special to the clunk in the tank. my tank is mounted directly behind the engine on the centerline getting pressure from the bisson pitts muffler. I did have some grass garbage in the carb once and it spit for an instance and then worked through it. Just My 2 cents worth.