Bonsoir Frits
I have add an Aprilia 250 V2 crankshaft as at this time we were thinking to copy it with my friend , there were no washers on the side of the conrods , but there were something a hard coating very thin , I would say nothing , may be DLC ? Yesterday I was speaking with Francis Payart he know this but he do not what is this material . Two washers less it is two mm more for the crankpins inside the wheels .
All the best Jean-Paul