More depressingly, I've found that I'm going blind. I haven't really built any circuity type stuff since I was in my teens and now, in my mid 30's, I can't read the values on half the components. I started by photographing them so I could zoom in on the computer, but that was going to be a PITA. So I borrowed a pair of reading glasses and, by jove, I could see again. This growing old thing and having stuff stopping working right is just not on.