Start with a baseline
Before touching a setting, run the same section several times. Write down the behavior you want to change. This is more useful than beginning with a list copied from another build.
Define the problem
Use specific descriptions. “Too slow” could mean poor entry speed, slow rotation or weak acceleration. “Unstable” could mean the rear moves during throttle changes or the steering is too sensitive.
Change one major variable
Make one meaningful adjustment and repeat the same test. Changing suspension, steering and power together can produce a different result without telling you why.
Keep or revert
If the change improves the behavior without creating a new problem, keep it and establish a new baseline. If it does not help, revert it. Reverting prevents a poor change from becoming part of a confusing setup.
Know when to stop tuning
If you cannot repeat the same driving inputs, more tuning may not give useful information. Stabilize the technique first, then test the setup again.