I've had one of my corny's for a while so I thought I'd be good and give it a good fettling, including replacing the o rings. One of the posts was really tight, as in, me wrestling it on the floor, my wife sat on it while I tried to get it off. My neighbour, who likes tinkering with stuff had a wrestle then came up with the idea to heat below the post with a blow torch. This worked, BUT when I got the post off the male part on the keg had stripped the threads. Question is, is it buggered?