Did a longer ride with the D21 today. It was quite windy, so noticed a big improvement over the regular bike
Two notes:
* When stopping at a light or junction, I need to remember to change the pedal assist back to 1, otherwise when starting to pedal there's a bit too much power, as my muscle memory is making me pedal too hard and the torque sensor picks it up. On the other hand, if I have to stop quickly and didn't have time to reduce the gear back to 1, it's fine, the gear doesn't really matter when the motor kicks in
* I keep switching from kph to mph by mistake when I want to switch from pedal assist 1 to 3, need to click slowly to avoid it