I didn't knew the info that The Zigmeister wrote...I missed it in his reports..
I have the 196...and wear it from time to time...have it already for 9 months (someting less)...and everything works just perfect...when i don't wear it for few day and i decide to wear it...I set the time & the date and voila!...the watch keeps great time...chrono works perfect...
EL posted a topic on the RWG I about the 7750 mvt...you should read it for yourself...it may be of some use to all of you...
LINK : 7750,7753,7750b date,chrono issue