05-02-2022, 12:15 PM
Yes, the balance pot is the hum adjustment #128. It is a dual 60 ohm pot with each section across one of the windings. If you look at the the filament windings you will see two pots, one across each 6.3 winding but it is a single adjustment dual control. Only one section is labelled #128, but if you examine carefully there is a dotted line between the sections.