Well, good news! I fixed my Tempest video problem by adjusting the brightness down to where it should be! I also had to adjust the Y size down a bit as it stretched past the edges of the screen. So I have a fully working Tempest in excellent shape for only $30.
I would say that I had a good weekend :-)
I will be ordering a repair kit for the monitor from @BOBROBERTS@ and will rebuild the monitor. This is to ensure that it operates for as long as possible and hopefully clear up a little bit of the jitters and bowing.
I will also be cleaning it up and putting it in the game room this weekend.