–Added water to the pool. Coincidentally or not, everything slowed down: skimmer, sweeper robot. Incredibly frustrating. Will clean filter tomorrow–again–though I’m not optimistic.
–Bought on eBay a crown tube for my Rolex Datejust and a tool to install it. Got the old one out with a broaching tool; it wasn’t ultra tight. The threads on the old one were really sparse and worn, so it took only a fourth of a turn or so to go from unscrewed to screwed in. Really curious to see why none of my tube wrenches came close to fitting.