mark, main problem are the faulty modules and many eople tend not to wear the watch thus to let the module rest. but even than things do oxidize. however the modules for the heur watches you mentioned are easy to replace....ok no heuer on the module...but who cares.. I have the same with my 9416...I have 4 peices but the one I wear is with a non-breitling mosule for 100 usd...in order to safe the original breitling one....

by the way have more catalogs now...but to much work at present to post them...
Alex