schematic has a few values changed,
pwr trans putting out too much voltage, 7 istead of 6.3, annd 5.6 instead of 5, 112% of desired,
390 from plates to CTwill be about 450 on the ancient dry lytic, big trouble,
had a 6L6 installed, extra current and voltage to the OPT, 1K pwr sup R was bypassed,
excess pwr was not a welcome sight to the #37 pri wire,
so the OPT surrendered,
rewind pwr and OPT, right?
otherwise we have a popcorn machine waiting to happen,
notice 1K in frot of first filter, might drop 40V and save cap but we want about 350 on that plate,
at least the screen runs lower than B+,
we will run 500 ohms instead of 1k in the pwr supply for less heat, this will drop 20 volts at 40 mils, so if we want 350 on the plate of the 6V6 we need 350+20=370, with a 5Y3 the RCA book says we want about 312 volts AC feeding 40ma to the 5Y3,
so we need 312/390=80 pecent of the turns already on the pwr xfmr, and about 90 percent of the heater turns,