THe check engine light is on b/c bank 2 is running too lean cuz of a bad exhaust leak between the manifold and the X pipe on the driver's side. The last person to work on it shoved a flat gasket inbetween the 2 pieces which was all kinds of fucked up and coned out when i pulled it out. It's not supposed to need a gasket, but because of the way the studs are designed i can't thread the nut all the way down, so it leaks. I don't even know how this thing is supposed to seal based on the goofy ass design. Any suggestions? Am i just gonna have to take the studs out and put some in that are fully threaded? I tried taking them out and they wouldn't budge.