Awsome article! I have an 85 and 92 gen 1 which I wear on a daily basis id like to share a little unknown feature these watches have.they have a trimmer capacitor!!!! which you can adjust by a screw if your watch is running fast or slow. Ihaveboth mine running now at about 1 sec a month which I have the luxury of a cqt 210 quartz tester but you can test over a fortnight using an atomic clock app