Record the baseline
Write down tire pressures, fuel load, track conditions, and the setup version before driving.
03 / FIELD NOTES
Change one thing at a time.
Start with a baseline, name the symptom, and compare repeatable laps before keeping a change.
Next: strategy
Locate the symptom
Distinguish entry, mid-corner, and exit. A car that pushes under braking may need a different adjustment than one that pushes on throttle.
Run an A/B test
Adjust one setting, repeat comparable laps, and check both lap times and consistency. Revert changes that offer no repeatable gain.