GMTIIC to an AD for a regulation story

[Master Mariner]

Allright folks I know you going to think I've lost my marbles, but I decided to take my watch for a regulation as it was losing approximately 2,5 s / day. After a couple days I received info from my AD that a simple regulation would not suffice. They said that the main spring was too strong and had to be replaced. The curious thing was however, that the AD had been informed by Rolex Geneva that there are indeed a lot of watches w/same problem. Go figure..
Well after a two weeks await, I've got the watch back. Oh boy what an accuracy! It loses a second in every 5 days!!