Just got a really nice alu framed bike at our local market / auction, Merlin frame, XT front and rear , decent ( if a bit rusty) wheels -BUT can you identify the old air/ oil Marzocchi fork......? Shraeder valves in top of fork legs, under a screw down plasic cap, and mysterious adjuster dials on the fork legs. Like to get a bit more info so's I can find out correct air pressure etc. Cheers, Mark.