Here's the vertical "divot" issue. You can see it top right and just a hair on the bottom left. Yes, the yoke is slightly tilted but I have not been able to get a stable pattern up to fix it yet.
Also here's the video of the sync issue. Sorry for the potatovision, apparently stabilization does not like unstable CRT traces.
The tapping you hear is me hitting the side of the chassis with a screwdriver handle. Sounds like I'm hitting it pretty hard, but it's probably about the same amount of force I'd use to crack an egg, for lack of a better comparison.
https://www.youtube.com/watch?v=z0v4...ature=youtu.be
The odd thing here is if I flip the chassis on its side, it's better. It just won't work properly if I have it sitting right-side up.