have you given your LBS a shot at it?

Flow path is Manufacturer> distribjutor> retailer ,
and it usually works better to have the retailer ask their distributor.

the one out here has several they have accounts with..


dug out my Sutherlands their listing has a French 600A, at 541..

and the 540 in a British and Italian column .. [pg 12-25 3rd edition]