Yeah, I'm being lazy, but does anyone know the size of the copper washers used on the outside of the 8" pumpkin that go under the nylock nuts? I'm putting in my traction-lock this weekend and, here's a radical thought, want to buy all of the parts ahead of time. Already have the gasket and axle seals. The existing unit does not have washers but they are called for in the manual and make sense to use since they are used as thrust bearing surfaces. Thanks in advance!