Yeah, sometimes around 2 in the afternoon, I tell myself that I will never make it until I get home with my pants and belt as tight as they are.

But that isn't what I'm angry about. For some reason, my 300D's a/c belt won't stay tight for more than six weeks. Now that it's cold and wet, the last two times the screech became unbearable, I have had to pay someone to tighten it for me (I don't have a garage). I have tried under and over tightening the bolt, but it still ends up moving. I have a fairly new belt (although it is NAPA, not MB). Any ideas for what I can do, short of welding, to keep this thing tight?