Can I buy them from the RM site? Should I just email customer service and ask to buy one? I got a bag from Active Endeavors last wk, no dust bag. I called and they said they don't have dust bags for RM?? My options were to return the bag for a refund (not a chance!) or live with it. I chose option 2, but now I'd like to track one down somewhere. Any suggestions would be greatly appreciated!