When the engine is dialed in, my advice is work on gearing it for the track as much as possible.
If there's no long straights where you can get up to 57 (or whatever,) gear it so you'll reach Max rpm in the longest straight, and can still blast out of corners.
Short tracks you want it quick, not fast. If y'know what I mean. I've seen many bikes geared for top speed that are slugs around the rest of the track.
If you can, bring extra sprockets and test them at the track.
My V1 "bike" runs a 9-42 on shorter tracks and a 10-42 on tracks with long straights. It's about a 5-6mph difference in top speed, but makes a big difference in the race.
The Grange track in Apple Valley CA has a 950' straight, so you can beat everyone in the corners, then a high geared bike will pass you in the straight, and you have to catch them again and again in the corners. I kinda hate that track.
But you probably know this already. Just tryna help out.