O.S. 25FX Backplate Mount
Mike Langlois of [link=http://aeroprecisionmachine.com/contactus.htm]Aero Precision Machine, Inc.[/link] designed and made some backplate mounts for the O.S. 25FX for Quickie 25.
These mounts are cool and take care of the remote needle valve built into the backplate with a little standoff.
Here are some photos.