Can I throw another wrench into this machine? I recently did just this very thing to my Raleigh. As luck would have it, I had a 2mm spacer and everything went together fine (I had to pull kinda hard on the seatstays to get the new, really long combo in there).
My concern is this, how much axle needs to show outside the locknuts? In other words, what's the minimum amount of axle that needs to stick out into the dropouts?