I made the plunge for a recently serviced 3919 which arrived yesterday and is beautiful. While winding the 215 movement, I noticed that it didn't take long to start feeling stiff and coming to a stop. To not force an avoidable broken mainspring, I didn't push it but only got about 13 hours of power reserve. When winding this morning, the same thing occurred. While I don't mind winding twice a day, I wanted to check in with you to see if any have had similar experience with the 215? Do I need to give it a little more force?
The watch was half empty about an hour ago and it got around 20 winds. If I should guess, I would say around 50. But if it is important, I can let it empty and try on Friday evening.