It's up and running. there isn't much magnetic pull from the field coil but there is sound. it overdrives very well. the addition of a capacitor to ground where @printer2 recommended helped quite a bit, cleaned up some flutter in the output. I'm concerned that the field coil isn't working correctly and I've discussed this with the customer. Output seems a little low. The voltage on the plate of the 6V6 bounces between 210 - 270 V depending on what you are playing through it. Again, I'm not sure there is much I can change. I came to expect that the field coil would have a magnetic pull on objects when energized and it doesn't.Have you gotten this old gem working?