Not meant to be fiddle with or move/worn too often especially for their relatively new 5960/5980 and complicated watches..
It has been more than 2 years now since the chrono hands problem appeared in the 1st batch of 5960,it may take sometime until their quality control improved unless they are prepared to learn from Seiko experiences with the single counter chrono.I have personally experienced 4 such problematic 5960&5980.
For the price we are paying,we should demand that it should be more reliable than Seiko!
IMO,Maybe Patek is just good at fine finishing nowdays,not really in getting complicated watches to work consistently.