Advice Admiral 12X12 20Z1 low contrast w/ lines

[rca21d645]

So I have the picture looking pretty good but the audio is now quieter and there's a loud hum drowning it out. I think it has to do with the vertical because turning the height and linearity controls makes the hum quieter.
Edit: upon further inspection it appears the audio output tube had gone bad between now and when I started this project, as the emmissions now test bad.