High BLMs but running rich / 3.4 DOHC fuel injectors

[Series8217]

I put Jeff's old injectors on and the BLMs are back to normal. Idle is still rougher than it used to be. I'm going to have my injectors checked out; I'll just replace whichever one ends up being bad. I don't want to keep using Jeff's because the inlet screens are rusted away. Mine were all cleaned and flowtested and had their screens replaced only 25,000 miles ago, so I'm not sure why they're acting up. I couldnt see anything in the inlet screens.