I need some computrainer expert help...I'm well aware computrainer is out of business. The resistance unit on my CT pro has started making a horrible noise. I've tracked the noise down to the thin metal disc that is in the black housing that's about a 1/8" thick. See the attached photo with the light blue arrow pointing to the disc. It is either loose or mis-aligned because it rubs on the other metal parts just to the left and right of it, which makes a scraping noise. I can stick a pencil in there and move the disc about 1/8" and make the noise go away, and then the trainer operates fine. But after a couple minutes of use, the disc moves again and its back to making noise. i haven't tried taking it apart yet...Any ideas on how to fix this would be most appreciated.