oh bugger, managed to sneak a couple of damn thick manuals into the house:
Rickman 125/250 Motocross, Owners Handbook, Service, Bulletins, and
Rickamns Parts catalogue, for all models 125cc and 250cc from 1970 to 1973, including 125MX & Enduro up to Frame No 9999, & 250MX up to Frame No 7499
Got them from the US, reprints($50.00 incl postage), but really brilliant manuals, got to give it to Don and Derek they knew how to do things, now where's a Zundapp motor, oops better type quietly, not until New Year, she said!!lol
Got them from Bear Sports, but you guys would already know about this place, really impressed with the quality of reprint.
http://www.bear-sports.com/servlet/StoreFront