Having sold the 900, I have a set of manuals for sale on Ebay right now. They are the combined 500/750 manual plus the 900 suppliment and the 900 parts list. If anyone's interested:-
http://cgi.ebay.co.uk/ws/eBayISAPI.d...STRK:MESELX:IT
I'll do a deal on the price if someone from this site is interested.