Since this forum is super fast, friendly, and helpful, thought I’d ask these questions. So I am having this rough idle thing, in drive mostly when stopped. Runs perfect otherwise. It’s a 2011 3.6R. It was a gift. Have driven it about 500 miles and never had a CEL. Changed the, oil, battery, intake filter, cleaned sensor, and changed pcv. Passed emissions. Was told here to change my spark plugs, clean the throttle body which is where I am now. The pics are from the passenger side. Notice the dirt/oil on the block on the middle coil. The pictures of the plugs/packs are respectively placed for the pic. There is clearly a blown gasket, I’ve cleaned some but took some pics for this post. There is no leak on the ground. Question is…am I being stupid by thinking this gasket thing is common and not a priority? Should I even replace these plugs if they’re going to get dirty again? At Rock Auto super good NGK were like $5 each. Last question is… I got some carbon off the air intake side of the TB, should I take the whole thing off and clean the other side? Thank you so much!