I went for a ride and for the third time I have gotten a flat within a few miles from home. First time I blamed the rotten Conti 4000s', next time I figured I pinched it as I had it off between rides. This time, I really looked. Hairline crack in the rim, and I must have to hit a bump just right, as each time I have gotten a flat, I continued on with no issue. Today, I went straight home.
I'm painting the porch instead.