........if you are completely unfamiliar with these, some do fit pretty tightly, to the point where if they are at all
off level when placed on or taken off, they will jam up. I just stripped a headset off a bike this afternoon that was
a slight problem because of this and the key that was a little jammed in the slot. You can enlarge them a little
on the inside with a curved mill file....try to use something with a curve that approximates the curve of your washers.