Welp, it looks like I'll be bending me some calipers. Or just putting the Weinmanns back on. (Of course, this being me, they'll probably howl like the hounds of Heck now. Nary a peep from them before.)
I don't have a BFC, though. SFC, yes, but small enough to fit into a seatbag... I doubt this will provide sufficient leverage.
And sorry to those I offended or annoyed... it's always seemed like a terrible way to do things. Offends my sense of rightness. I was hoping that somebody had found an equivalent to the modern "eyeball" washers that works on the Mafacs. Sounds like not.
--Shannon