This one may be an easy one, but I need help. I am having trouble with the idle on my 1100. I just had the carb rebuilt and I am have trouble with the idle when the engine is warm. The engine revs to high, but when I tap the gas the idle drops to a normal or appropriate level. Does anyone know what is casing this high rev and then drop when tapped? BTW, it is fine when cold and not yet warmed up.