Thanks! It looks even better today. Got rid of the remaining flaws while shooting 3 more build coats.
I'm also getting better as estimating how much retarder to put in the mix. That's special.
Tried something new that worked out well - I used mineral spirits instead of water to wet sand. Could just be my imagination, but it seemed to sand out better.
I also took some advice from a DIY article on the LMII site that said "don't cheap out on sandpaper - keep it fresh" (or words to that effect). Even though the mineral spirits kept the stuff from loading up at all, it still loses its cutting edges after a bit. Changing to a new piece gets things happening again.
Any way, I leveled it out, cleaned it up and re-shot and it's just gorgeous. Weather permitting, I'm going to do one more round tomorrow with some final thin finishing coats, then it'll go hang in storage for a few weeks to contemplate its navel.
I also learned something about latex gloves - it seems they have a shelf life. Let 'em sit too long, and they tear to pieces while putting them on. I wonder if that applies to other body part coverings made of latex?