Thanks. I take it these are something other than the Jones plugs connections ? When I first got the game, I carefully cleaned the male ends for all three Jones plugs (at the end that connects into the back box; the other end of these, down well inside the table, are not at all easy to get at) with 99 % alcohol. There were no lights problems, until very recently.

I'm going to try to update this thread I started, even at this late date. I tried to do so -- several times -- shortly after the date of my last post to this thread, but these kept timing out instead of going through. Almost like it was a locked thread, though more likely a forum software glitch.

Anyway, there was a dead fuse, and replacing that took care of the "all lights out in the backglass." A few remain out, and must be bad lamp sockets, since new bulbs did not help.

A very good tech I know adjusted some targets, and advised me to apply a square of foam weather stripping behind that center target. I'm not sure I did that as well as it can be done, but the problem diminished greatly. There have still been a couple instances like what was shown in the "stuck after airball" pic, but those shots mostly just bounce off the center target now. My thanks again to Pafasa and the other Pinsiders who posted their advice.