From those pictures it's difficult for me to tell just how bad the video really is. Any chance you have a test pattern DVD?
I understand the struggle of getting to both the top and bottom adjustments. I've been known to roll the whole shebang onto it's side, but only if there's a band holding the CRT secure.
Just for fun here's a couple pictures of me having used my HP8662A synthesized sweeper to align an Admiral 20Z1 chassis. The 8662 has 5 programmable markers and they are being intensity modulated using the Y axis input to the Tek scope. I know it's crazy overkill, but sometimes you need to do absurd things just because you can.
