116900 Always Running Fast

[Kap007]

Just got the A-K back from New York for the second time under warranty. From the day I got it new ran fast. +30 seconds a day for the first 6 months. Sent it in. Ran at +20 seconds a day for a year. Sent it in. Just got the watch back on Monday. For the last three days plus holding right at +15 seconds a day. My A-K 14000 from 1993 serviced independently runs at +9 seconds a day. Perfect for me; set it once a month when it's just about 5 minutes fast. I would be very happy if Rolex could get my fairly new watch to do +10 seconds a day. Why can't Rolex figure it out? Any ideas from the experts or kinda experts? Thanx