The BFO on my 392 is just a little off, so I just marked on its dial where zero
is and then offset the knob either way for SSB (or CW). SSB remained in range
on the "short" side of the BFO range.

I agree the receiver is stable. I used it on fax. I tried taping the fax, but
there's a slight difference in motor speed between record and play, which
causes thefax display to skew. I never got around to poking inside and
correcting or changing one of the speeds.

Those AAs below the Ds also save the memory and power the control circuits.
When they're dead, nothing happens.

Bill, K5BY