The small about of ripple on B+ is finding its way to the output of the video amp.
Since the video is fed into the cathode, that's going to effect the deflection.
I threw another 220uF right next to the video amp which got it down to less than 1 volt. Didn't help the image all that much though.
I'm thinking of adding an RC B+ filter to fee the video amp to help even more with the ripple.