I am pulling codes 420 and 430. Cats are out of range. I did some errands around town and the readings are at temperature in the driveway with no load.
Bank 1 and Bank 2 readings are pretty much identical so I am only listing Bank 1. The STFT at 2500 bounce between 0.00 and 0.08% but mainly stay at 0.00

Bank 1 sensor 1 RPM 750 Voltage 0.00 STFT 0.00
Bank 1 sensor 2 750 0.115 0.08%

Bank 1 sensor 1 1500 0.00 0.00
Bank 1 sensor 2 1500 0.85 0.08%

Bank 1 sensor 1 2500 0.00 0.00
Bank 1 sensor 2 2500 0.115 0.00

I am considering just changing the upstream 02 sensors and hoping it will clear the problem.

I would appreciate thoughts, comments and recommendations for the best course of repair.