Very unfortunate accident. I thought cats tiptoed around never doing any harm? (I'm use to dogs, and they can get very active when the play). A 830 weighs more than two cats? I would spend a bit of time on ebay, contact Helen Howes, local repair shops etc. I know machines are parted up. Original replacement parts turn up know and then, I sometimes see new motors, freearm tops, etc turn up. Its mostly a question of time and patience before it turns up.