Hand-tuning is guessing across hundreds of combos. 20 minutes here gives you the one answer — including the number no slider can even reach.
Mouse and pad — typeahead lookup, three quick questions if you're not sure about your pad. 30 seconds.
Guided calibration (~2 min), then a few rounds of tracking and precision. Rest anytime — break reminders every 3 steps.
Suggested value, the why, and the error margin. Auto-saved to your sens archive — swap gear, come back, see the difference.