Updated my software for my scanner today and did the induces vacuum test. It didn’t change the fuel trims. But I did find out that the catalyst is toast and is more than likely partially clogged and causing too much back pressure on the engine. I suspect at this point that it’s causing incomplete combustion and not slowing enough fresh air into the cylinders and causing the rich running condition. So for now the project is on hold until I have the time and money to replace the catalyst.