Yeah. I think before any money is spent on this amp, especially on HV power supply capacitors, I'm going to have the tubes tested. Granted, a 3CX800A7 conversion could be fun, it's still a 40+ year old amp. Seeing the condition of the inside of the amp makes me NOT want to test the tubes in our good 374, although I may be overly cautious. When I repaired the Henry 2k, the two 3-500ZG tubes were only $350 shipped, and I think I had about $50 in relays and other discrete components aside from my time.