Thanks for the additional informations, I will make sure to check those spots you mentioned when I pick up my watch. My Service Center has recently allowed by MJLC to be able to service the 751b and I am keeping my fingers crossed. I am also have to admit I'm a little disappointed with 1000 Hrs test for this watch because it seem not to detect the problems. One down side of this "Vertical Trigger" is that it lost the "soft & smooth" feeling of the column wheel but it is a great "trade off". The Chrono diver is also one of my favorite but I'm aiming for the AMVOX 3 which will complete my collection. My most favorite JLC is the Master Minute Repeater (the skeleton one) but with that price tag may be I can only dream of.
I hope your service center are not the same as mine (I live in Thailand)!
Cheers,
Gun