Installed a Perrin TMIC (bought used) today, and the fit wasn't too bad. The IC sits at a slight angle, left to right, but everything bolted up fine.
Question: should I have a gasket between the IC and the stock BPV? After I took a drive to make sure everything was good, I noticed a tiny bit of oil on the IC at this joint, and was thinking I may have a very slight leak there. I didn't want to torque those two bolts down too hard because they go into aluminum, of course. If I see oil again tomorrow, I might just try loosening and re-tightening to square it up, but I was thinking I might need a gasket, as well. Thought?