When I took my 1970 750 motor apart the oil feed lines going to the head had two copper washers one on each side of the banjos. The washers were of various sizes so I guess the PO used whatever he had. I can not find any information in my Norton spare parts book. I went to the local dealer who used to be the Norton dealer in town and he sold me four steel washers. Looking on the Old Britts web site and the photo of their oil lines show a copper washer on the outside and what looks like a steel one on the inside. Should I put it together with the steel ones reuse the old copper ones, they did not leak, or start all over again and go buy a Honda?