Your best bet is to find a Game Vendors Auction in your area and hope that they have an old RP you can cannibalize. We've had a few companies calling us about supplying parts for a RP restoration in the past few days. Unfortunately Bonzini parts will not interchange and RP no longer seems to support its older products. That was one of the main reasons we switched to Bonzini tables about 15 years ago along with many others.
Alan