Still trying to work it out..can't bias it correctly...one side of the circuit is hotter than the other but all the resistors seem to check out...but I'm a n00b at this....there are whole chunks of PCB 'missing' presumed evaporated though and the bias testing circuit plus tube failure doo-hickey has certainly been hand repaired at some point too....seems like the components check out OK..just trying to trace the circuit thru' right now.
That's a huge step forward...be interesting to see what happens to the used market after that point...they're still great amps but their scarcity keeps the used market nice and buoyant