Hi there, I have been trying to get my hands on RC RIWs for a few years. I am on the waiting list for SandHill, but have told they have poor quality RIWs so I am also looking for another source. Urch lists them online, but I noticed they weren't on the mailer he sent out for ordering birs (I'll probably call the business number and ask about them tonight). I'm definitely interested in other sources.