OT has a blue ground wire? Cap on heater wire to ground. Some parts replaced but still a nice amp.

Shared cathode on V1
.022 coupling caps after first stage
470k mixer resistors
No bright cap on volume pot
500pf mixer bypass cap (Not Stock)
No bypass cap on V2a cathode
56k/250pf tone stack combo, typical JTM45 setup
27K NFB resistor on 8 ohm tap
.1 output coupling caps after phase inverter
220k bias splitter resistors
.1 cap on the presence control
All transformers are Drake
Steel chassis