Finally! We have a day's result that looks like a big improvement. Hip hip hooray.
We now have two top coats on the port side. It looks uniformly white. The texture is eggshell, but we have one (maybe two) more coats to go.
We came close to our targets today regarding coverage and time. One quart covered 60% rather than 50%. It took us 2.5 hours to paint (after two hours to sand yesterday's job). But at the end the paint started hardening in the can again. It was warmer today.
We are pleased and relieved. The end is in sight. Photos will follow.