All rep movements can show some problems anytime, 50/50 chance but for the 7750 is a 95/5
(95% you will have problems) we all know that cleaning, oiling and adjusting the 7750 movement will solve many of its problems, but I have a feeling that the 7750 will not hold even after service..just my opinion.
I do the mods and servicing on my watches and movements...the swiss 6497, C6497-2, 2836-2 are exellent movements with very few problems after service is performed.
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