Michele, was it just one roll in the tank?
I think you need about 4 ml PER ROLL, the idea being that the developer is largely used up during long stand processing.
If just one roll, I guess that would not explain it.
EDIT: Reading again, it does sound like you only did one roll. Can you add any exposure times for the sample images?
Leica M3/50mm DR Summicron/21mm SuperAngulon/
Canon 7/50mm f1.4
Leica IIIf/Summitar/Collapsible Summicron
Yashica Electro 35