I'm not sayin balancing ain't important here...so don't pile on. But yall tell all that "you gotta balance it" stuff to them Saturday night dirt track boys. LOL
I'm not in a dirt track area up here, but I can tell you the winners on the loacl short tracks ALL have special balancing done on the primary and backup engines. The shop I use has had multiple track championship engines for years. It's almost 50% of his business. If they aren't spending on it, they are missing out on some free power, and a little jump off the corners.