Well, live and learn . . . I was trying to replace the crystal on my WM 1665 and found that the retaining ring had been glued down. So, I went about trying to remove the movement/dial assembly so I could press the crystal out. I pressed too far on the crown stem removal button, removed the stem, but now the stem doesn't do anything when I re-insert it. The stem doesn't engage anything when I reinsert and the button appears to have dropped into its hole into the abyss. Crap. There's nothing more for *me* to do at this point, right?