Yeah it's tough at short track events because you do pay a decent amount of money and have limited time. You certainly don't want to spend it in the pits adjusting things!
It's just going to take some time to get everything adjusted and set up to your liking. There are so many little things that can have an effect which is why it's called the rabbit hole as there never seems to be a bottom
Lastly, if possible, see if you can contact Zeal and get their suggestions. That may give you a good base to start from.