I have heard that mounting a four stroke with the cylinder hanging below horizontal can cause less than optimal idling. I'm not saying that this is true, but if some form of "collecting" is occurring, is it because of the cylinder angle or because of the angle of the carb and inlet pipe.

On my Saito 120, I would like to mount the engine so the cylinder is dropped 20 degrees below horizontal for exhaust routing reasons. BUT, I can rotate the carb inlet pipe by the same or greater angle such that excess fuel will flow out of the pipe instead of into the engine.

Any thoughts? Will this accomplish anything?