. . .it's actually pretty great that John and Suitbert and Jeff and Thomas went at it over this issue- it produced a lot of great information all around and for anyone who takes the time to really sit and think over and digest the huge amount of information in this thread, much of it from either very experienced connoisseurs or from watchmakers with tremendous writing skills as well as tremendous technical acumen, they'd really learn a lot about everything from chronographs to how watchmakers view service issues. The whole thread has been a great service to the community and IMVHO is a wonderful resource. Thanks gentlemen!