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Ok, after changing both the 2nd and 3rd IF tubes, I now have a video signal. It's not good, and the audio is still distorted. The 20uf electrolytic in the audio came in, but that didn't help. I'm still waiting on a 16uf filter in the focus coil circuit.
Actually your scan lines look pretty well focused. Maybe try a composite video signal hooked directly to the grid of the video output tube?