Does your movement have dial feel hook clamps, or dial feet screw clamps? If the latter, an ETA stem won't fit the Z2 POS movement. aka 2813 POS high beat.
If this is the BB Tudor rep, I have had a few in for repair due to the movements stopping, and they all turned out to be the seconds hand touching the underside of the crystal.
The water you were snorkelling in, was if fresh water, or salt water? If the latter, then you will need to get the watch serviced, if fresh water, you maybe lucky with the uncooked rice, or silica packs option.
Congrats! I have a tube to fit to a case that has a hole much bigger than it should be. Trying to think how to go about it. Maybe fit a small sleeve, then the tube.
Great story mate, enjoyed reading that
I have been there with some watches, and more recently have purchased watches from my past that I really liked but for some reason at the time I had let them go. Mostly quartz too, but I have them again now, and contempt.
Checked allwatchparts, and the CH8836 they have listed has dial feet clamps/hooks not screws like this high beat 2813.
CH8836 by Micky.!, on Flickr
So we can rule that out then. Really need to nail this name down for this latest POS movement TD's/factories are putting into reps and changing a packet for.