Originally posted by Hawaiian Turbo I'm using UR-5's right now. Used to use 23 autolites. Haven't had too much luck with the 42 and 43's. Had to close the gap to a tight 30 on the 5's.
If you're not having problems, I'd gap at 35. I had a miss on high end, and thinking the high boost was blowing out the spark. Tightening the gap cured the miss.