I have a Longines Power Reserve that I bought several years ago and had serviced from a (then) respected watchmaker, and I am pretty certain the watchmaker did the basics. However, the stem winds very stiffly, and the reserve disk never was right. I think it is normal that it rotates dynamically, but the readings were never correct. What it registered and when the watch stopped were never closely matched. The reserve on the wind never lasted overnight. I understand these can be tricky to set up, and wanted to ask if anyone had advice about this or could recommend someone to send it to, as it seems like a more specialized kind of service. Sending it to the original service person is not an option. I'd like to wear the watch, but only if I know it operates properly.
Thanks, David