I've been watching an oil leak that recently started. It's coming from the #2 cylinder top left bolt. I cleaned it up and did a ground run and after the run oil was already running down. I talked to the mechanic but short of pulling the cylinder, which he didn't recommend for this, he just said keep an eye on it and will likely just have to deal with it unless it gets worse. So he didn't seem too concerned, which I'm okay with. But I was wondering if this is a through bolt that maybe just take the nut off and slap in a new o ring...any ideas or just deal with it? First and only leak I have on this thing..ugh.