This is the fate of B testers. But he rides very wellOh, so there are people who have the same problem as me. My headset can be easily attached and detached by hand.
Naturally, noise and vibration come from the head cup, but we have been able to reduce this considerably by placing a piece of paper between the head tube and the head cup.
As this was my first e-bike I was a bit worried about the motor and battery, but I never expected to end up having trouble with the frame.