1996 B3000 Runs Rich -20% STFT both sns

Hey folks, I'm new here so let the beatings begin.
I have a rich condition going on. It's a manual 5spd
Scan data shows:
-In closed loop
-ECT 190 deg
-Both front O2 sensors .900+, not switching at idle or open throttle
-Both STFT -25
-MAF 4-5 g/s at idle

I created a large vacuum leak at the throttle body right behind the throttle blade on the passenger side (it's been plugged off, not sure what this port is for) and with that port open the O2 sensors both switch at .200-.900 volts. Both STFT come up to around +7. But obviously the idle is way too high the vacuum leak.

I bought this used and I'm guessing it might have the wrong injectors.