ouch. for real? that's awful.

Really, I'm not trying to correct big things here. Just trying to improve my skill by perhaps combining truing and tensioning by working with other spokes than those localised at whatever imperfection it is that I'm focused on. I have a far fetched plan of building up a good a wheel as I can and then systematically unscrewing some spokes to check what the effect on tension on the opposite spokes would be.

I'd have to be in a really, really enthusiastic mood to purposefully screw up a good wheel though. So as usual the easiest way is to query the vast combined knowledge of the forum.