Here is something I discovered not ten minutes ago. If you have a "waterproof" watch with a two-part stem, the usual way to remove the stem is to pull out the crown, then wind back a little to release the "bind" of the stem, and then pull the stem out. On four of my watches I have two where it is difficult and traumatic to remove the stem, and it worries me that I might one day break it, as I did on my Surf King's. Well, on my new Water-tite I posted recently, I could not remove the stem, and have just tried it again, but had a Brainwave. Instead of pulling out the crown, I left it closed, took off the crystal and tensioner and up-turned the watch, and gave the crown a wiggle back and forth, turned the crown backwards a little and wiggled again. After repeating a couple of times, always winding back a little bit after each try, the movement dropped free! Tried it on my 1960 Prez, and it works! At last, worry free two part stem removal! Hooray!! Try it, You'll like it!