since jake got a heli-coil i feel safe going alittl off topic and telling a jb weld story:
my DSM friend had a BAD exhaust leak at his flex pipe, totally rusted through, hole bigger than a quarter. he neeed to pass emishions the next day. so we just took about a whole tube of jbweld and slaped it on up there but cuz the hole was so big it kept dipping down. so i grabed some fiberglass cloth that i had and we put that over the hole with the jbweld. looked like ASS. but it didnt leak and the emissions tester didnt have a problem with it. but about a week later he put his 3in dp and catback on so it didnt have to last long anyway.
thats what jbweld is good for, nothing permanent.