just leave it be if it is running well.
if you feel anything out of the ordinary while winding or if it loses or gains significant time, then i would worry?
i'm no watch tech but here is my experience and
the day i purchased it, the watch techs advice from AD "bring it in for service when it breaks" (not the same guy responsible for below, he was there when i originally purchased the watch)
my service experience has been unsatisfactory and had to be returned to the mother ship 100% of the time.
***First Service: 8 yrs out (brought it in because when i wound it, the date wheel blew up along with other parts? this after it had been sitting in a draw while i nursed an injured wrist)
part 1)returned to me & minute hand fell off within hours.
part 2)minute hand replaced and returned to me with a scratched dial from minute hand... they replaced my dial. (sure glad it wasn't one of those silly dials with one or 2 lines of red writing)
part 3)got it back after they replaced my dial to find a thumb print on the inside of the crystal
.... brought it back and they finally got it right.
total elapsed time ~5months
***Second Service: 12 years out, the crown almost pulled out on my and was winding with some resistance & cross threading, so i thought it was time to bring it in.
part 1) routine part of service is, crown & winding tube replacement. well after it was returned to me... it felt exactly the same as when i brought it in.
part 2) they adjusted it and told me there was a thread wrapped around the stem.
i said .... but you just replaced it??????
part 3) 3 weeks later they offered to replace the crown and winding tube again. (sure sounds fishy to me)
total elapsed time about 6 weeks
ps. i assure you i brought it to the most reputable service in nyc.
and there was never an issue related to the length of the service interval being missed.
you are going for your lungs when you bring it in so whats a few more broken parts if you wait too long?
finally my service advice is certainly debatable, my experience with my service is backed with paperwork.
thats my 2 cents