Ok, that's somewhat reassuring
Well, I went over all of those wires and they seem solidly connected. I reheated all of the connections for the black wires. I went through all of the build steps to be sure I didn't mis-wire something, and all seems ok.
Well, I want to back up a sec and double check my resistance readings. For all of the terminals that are supposed to read 2.9k Ohms (terminals 7, 9, B3, B6), I get infinity, if I'm reading this meter correctly (I have a cheap digital meter. On this meter, the display shows 1 and the low battery symbol lights up, seemingly to indicate infinity). Changing the range of the meter has no effect in this case. As a point of reference, I do get the proper values for the center pin of the rca jack; I'm getting roughly 95k Ohms. Also, all of the terminals that are supposed to read * (which I understand to mean varying), also read infinity.
So this seems wrong to me.
Thanks again for your help.