In my last post, I used confusing terminology. This 189-page manual, created over several years through the cooperation of the USA7s community, contains very thorough repair and upgrade info for the WCM S2K, but is also quite helpful for owners of Caterhams, Birkins, HK's, Westfields and more. Yours free if you provide me with your email address, either through response to this thread or via private message.