Thanks to everyone who's posted in the thread. After ruining one of the blocks with the jointer, I've been sanding them with the belt sander and block sanders with various grits of paper. It doesn't look too bad, although the edges aren't as polished as I'd like.
As an aside, I'm trying to work up the motivation to document some of the things that are good features of the PlaneAround latch, but which I've never seen "in print". I need to go make some pictures and upload them to better illustrate.
If I find the motivation, I'll start another thread...
2001 RV-6 N46KB