hi C,
Thanks for the kind thought, but I do have the LM358 in my LTS lib.
[member of the Yahoo LTS users group]
The circuit I posted was based on a CA3140 opa model, I was just trying to make the OP aware in the way he had connected his voltage input sources, he was attempting to drive the output below 0V, which he could not do because of the single supply.
I am always interested in other members *.asc files and their techniques, so I would ask that you post the LTspice *.asc file.