I purchased an H60 a while back which has been sitting in my closet. Recently I decided that I would put it in my q9550 system when I realized it was missing a part. The little double sided threaded piece (there should be 4 of them) that screws to the backplate and the thumbscrews screw to it. I have 3 of them and there should be 4. I've emailed customer service to no avail and don't really know what I should do from this point. If I could get a replacement hardware bag, that would be best...