The first time I rebuilt my calipers, my rear one leaked at the banjo bolt. Turns out I was
too timid to tighten that hollow bolt as much as it needed to be tightened. I saw that it was
leaking (just barely leaking) before I rode off, so there was no bad.
The washer in question is a "crush" washer, and it does crush some when used. There's an
assortment pack of copper crush washers at Advance Auto, and there's a couple in there
that are just the right size for Valkyrie banjo bolts, I'm sure you can get the right size a
bunch of other places..
If you use the 3/8ths inch ratchet handle instead of the wimply 1/4 incher, you can
probably get away with reusing the original crush washer any number of times...


-Mike