Ya, I think if you find a ceramic in the signal path, then it's up for C0G. I bailed on changing all the components at once, but I did go 75%. I'll run it a bit, and then change the rest of the diodes, and the 2W resistor. Transistors are staying. I fired it up, dim bulb first. No issues there, so then warmed it up, and took the 33.6vdc and adjusted up to 35.05vdc. No speakers attached yet.