I changed my tranny oil today and when I went to reinstall the drain plug, it kept turning. I have no idea what happened. I'm a pretty good mechanic and i know i didn't cross thread the bolt (I started the threads with my fingers before I put a socket on the plug). Anyway, I know it's not the drain plugs that's jacked up cuz it the threads look clean, so it has to be th case. My question is, what is the best way to fix this? Do I need to tap it? Any sugestions. Thanks.