Hi guys,
Need your advice. I have a concepta top gun with gen movement for about 3 months. The crown does not screw down smoothly. But today it can not screw down at all. It is like the screw which is supposed to hold the crown has worn out. You push the crown and screw it down, the crown just bumps out again. The movement is running though. Can anybody tell me what is wrong and is it an easy fix without touch the movement? Thank you very much!