yes, it is on K and C sets, though much more obvious on C sets and some K sets, generally C356x or C357x (later K sets). Its very distinctive, and is not just a brake hiss or anything. The Railway Rasputin II. <bob@fastlink.com.au> wrote in article <3897F5E7.CB302D29@fastlink.com.au>... > Are you sure its not a C set? > > rgds >