I think it's fair to say the engineering on this set is a little shaky in general. For example they used a 47 ohm 10 watt dropper resistor in the 0.45 amp filament string. That comes out to 9.5 watts so they really should have used at least a 13 watt resistor or, better yet, a 15. Also, assuming 117 VAC, a 51 ohm dropper would be a better choice.
Anyway, I just finished ohming out all the transforms, choke, yoke, flyback etc. and they're all dead on so the restoration is a go