My rebuild kit for our 1975 Bow and Arrow came with 2 Spring washers, 1/2". I'm not sure where they are suppose to go. I did not find a washer when I took apart the first flipper assembly. Homepinballrepair.com diagram for Bally flipper parts shows a washer at the end of the plunger where it meets the link assembly I guess keeping the spring aligned? The actual picture does not show a washer. SteveKulpa.net "how flippers work" pictures seem to show a spring washer between the brackets and the coil, which makes more sense, but I haven't seen mentioned. His pictures also show the diodes at the coil stop end, and I am thinking about switching my coil around where the diode is not at the coil stop end. It looks like a lot of kits don't even include the washers. I guess I can always leave it out....