Yea, I have a shed I like to do the work in but if I were to have put the bike in there before the snow came I wouldn't be getting it out until mid march do to the soaked ground around it. So I have the cover on it and its surrounded by snow, so it will a little while before I get to it.
Anyways, when I measured the new hub I measure the locations pointed at with the green arrow, not the red on the rotor side which I believe is the surface you are saying is a 1/4" shorter/narrow, correct?