[Adam]

I got the audio to work on this last night, I just replaced a bad electrolytic cap, C3B, C3 looks like it had already been replaced at some time earlier, too. This fixed most of the strange voltages I was reading on the IF and RF tubes. Also, the antenna terminals were up against the side of the 24v transformer, grounding both of them, so after I replaced the cap I only got very weak audio, after I wedged a bit of paper between the antenna terminals and the transformer (I will come up with a better form of insulation later) the sound came in good with a bit of fooling with the fine tuning.
This must mean that the 6K6/25L6 transplant works. Still no video, but when messing with the fine tuning now I can get in all sorts of wavy lines, better than nothing I guess. Next, I just am going to change all the electrolytics and see what happens.