The iterative fit process

The fit you dial in this month isn't the fit you'll need in six months. Flexibility changes with training, age, and desk time; training load changes what's sustainable; goals change; and position drifts subtly as you settle into the bike. A reasonable re-check cadence: every few months, any time persistent discomfort shows up, or after a significant change in training volume or goals. The recording is fast; an occasional check-in costs little.