MOTM

I have a question regarding my MOTM-700 Router's operation.

The whole module seems to "work." The strange thing about mine is that, with
nothing plugged into it, the upper half seems to switch at about -1.9,
whereas the bottom half switches at 12:00 exactly. If they were the same I
wouldn't question it. There is no calibration to speak of on this unit.

All I can think is that DC is leaking in somewhere, or a resistor is wrong.
I checked the resitors... they look right...

Anyone have any sage counsel?

Of the nine MOTM kits I've built so far, this is the only one that hasn't
worked perfectly first time. Even so, it "works," but it seems that
something is just off a little bit.

Thanks in advance.