Eric
I disagree with your analysis that the diode is faulty.
The OP measured his diode using the "diode test" facility on his meter.
One way he measured 0.6v, the normal forward volt drop of a silicon diode, the other way he measured 1. the same as leads O/C.
In the 2k position on the meter, I dont think there will be enough voltage available to put the diode into conduction, so it shows O/C both ways.
(This is why meters have a diode test function).
I would conclude that the diode is OK.
JimB