[mikethedruid]

Well, if the 6A8G mixer/oscillator is bad, you are likely going to have some problems. Buy the needed tubes. It is always best to sort out those problems even before you start further diagnosis, once you have finished the basic rebuild and before alignment, so one thing doesn't mask or interfere with another problem. I'm following your work with interest. I have my eye on a 37-665 myself, but doubt I can get it while it is still in my price range. It looks fairly unmolested, and the cabinet is very nice. Good luck with your project.