On the corner of my valve cover there's a stud that's locked to the nut that holds the valve cover on, and when I take it off the whole stud comes out. Well now when I put it back in, it just free spins and I'm pretty sure the threads in the head are stripped out. It doesn't leak MUCH oil with it this way, but it'd be nice if it didn't leak any, anyone have any ideas? I was thinking about putting some threadmaker in there, but I don't know how that'd work. I'd rather not re-thread it and use a bigger stud, but if I have to I guess I could