We never went over fluid dynamics in physics but from my understanding of surface tension from chemistry I can image a small diameter feul line would have considerably more friction than a larger sized pipe, on a oz per oz basis. In any event, back to small tubing with 3rd feul line for filling. However, do I need to add a clunk to the third line so that I can de-feul it as well? If so do I need to worry about both clunks getting tangled?

On a side note: Today I primed the engine and ON THE FIRST FLIP it started. I'm afraid to try it again since it may not start the first time and I'll be bummed again