Cary,
Unless somebody can advise otherwise, i would hafta say this regarding your sound tracking problem: The problem lies
entirely with the sound IF strip, not the video. Any misalignment of the video strip would show up visually (as smearing, ringing, loss of fine detail etc.). Please resist any temptation to touch the vid cans any more.
I would try "walking" the sound cans a bit in one direction, and if tracking gets worse, 'walk' them in the other direction. 'Walking' each slug involves going only a tiny fraction of a turn at a time.