Do we B6'ers have an option to rebuild our ac compressors? I've searched and found a few other forum posts using Google but it seems that people have replaced the o-rings around the clutch. I have a bad compressor and was looking into a possible rebuild as opposed to just dumping $445 for a new one. What do you guys think? Does a rebuild DIY exist or are the ones I found online regarding replacing the o-rings all I need? Where are the ac gurus?