[DKinYORKpa]

This mystery resistor has been resolved. While the 18 code 121 shows resistor #35 to be .1 meg, that same resistor on the code 124 is .5 meg. So, while mine is a code 121, for whatever reason, #35 was a .5 meg. I'm going to make it a .5 meg, although someone more leaned than me explained it this way:

35 is definitely not a critical value. Along with a capacitor this is just part of an anti-hum filter for the bias voltage coming in to the 2nd detector. I suspect you would have a hard time telling any difference all the way from 47K to 1 Meg. If it was too low you might get some audio hum.

Now I won't need those 2 aspirins!