Replaced the MC. Brakes seem to be better. It's just going to take time to be sure the semi-random seizing doesn't return.
Found this while we were at it...
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Look closer...
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So that is the JBA (IIRC?) arm rubbing rhe tire. Options are to kiss it with a flap disk next time I have it in the air, or to install spacers. New wheels with more offset would work too, but that's just ridiculous.
Not sure if I'll dress it with a grinder or install spacers. If I go spacers, they will be bullet, as cast is for moron (literally, for engineering reasons).