I have a 2003 Harley FXD, Stage 1 carb kit installed, V/H pro-pipe. Usually when cold, bike occasionally spits through the carb, as iff there is an intake leak. It happens when I ease on the throttle. If I roll it on quick, it seems fine. After it warms up, that goes away, but bike has a skip. Any thoughts? cuedude

I have a 1986 BW80 yamaha my buddy sold me about 5 years ago. he had rebuilt the engine with 50 over piston. it ran good with only a mild flutter at or just before full throtle. It wasn't a problem because it was not very noticable. Over the years it got worse, around half throtle or so it strarts fluttering, if you let off the gas a little it will level out and start back pulling again. i took of the air cleaner to look at the intake of air flow while it was fluttering. when fluttering it is blowing compression and fuel out the air intake of the carb, once you play with the throtle it will clear up sucking the air fuel back the correct way into the engine. bike mechanics have told me everything from carb, vent valve to rings. I recently put new rings but that didn't make any difference, actually made it worse. I am thinking its the reid valve, I inspected it and there was no trash under it but was told that they do get weak over time. Is this the next thing I need to change? Or does anyone else have an idea.