Well everyone, I have been tinkering with the car over the past several weeks when I had a few minutes, and I am happy to report that I have successfully fixed the bank 2 rich condition. After replacing the fuel injectors did not solve the problem, I put the car up on the lift and found another plug wire boot charred. #6 to be exact. The PO had put some fiberglass sleeves around the boots on all the wires and the heat transfer from touching the primaries cooked 5 &6, but i couldn't see any damage due to the sleeves. I replaced the wire and the plugs while I had it in the air, and just took it for a ride tonight and injector pulse widths are similar between banks, and the short term fuel trims for both banks were at approx 0. Huzzah!

Thanks everyone for your help.