Takes a lot of time to sort stuff out. This especially true if you are trying to race and sort on the same pass. I have nearly 500 passes in my current ride. Still working on it. It still has the same heads, cam, intake, carbs, compression, headers it started with 5 years ago. Started at 9.40, been a best of 9.04. It's time consuming and every change isn't always rewarding.
Doug