RCM plans are not commercially available and never were from Air Age or Model Airplane News.

People finally got fed up being scammed by the guy who had the originals who took their money for orders and never sent anything - plans, refunds or answers to questions about orders not filled.

Those who had them in their collections then started posting them on line.

Most all are available for free download at RCgroups.

You'll also find them Outerzone, Hip Pocket Aeronautics and Aerofred.

Air Age handles Model Airplane News plans. And there is a large Kaos listed there.