2008 116710 not keeping time.

[Sunshine]

I have a 2008 GMT Master II that has give me trouble for years. It has been in for service twice for not keeping time. I always return to my Rolex dealer to be sent back to Rolex for service so no fast fix crap from the mall. If I wear it from day to day it will keep time. I do wind it as many others have instructed. The problem I have is when I don't wear for several months. When I get it out and back running it has trouble keeping time for the the first day or so. So i purchased a winder to keep it running when I'm not wearing it. Now I noticed that on the winder it runs about 10 min fast over the course of a few months. Any suggestions would be greatly appreciated.