I think I might have found part of the problem. Rotten vac line. Went to Murray's and picked up a new one and seems to be running better. Not 100% tho. Hopefully it solves my intermittent p0440 issue. Pics of rotten hose, which connects the Intake manifold to what I'm guessing is a feedback gauge on the TB.
I gave Tuffy a call and they said they could replace my CAT for $225, so I'm going to wait a couple weeks and get that done.