csilver
You did the right thing. I've been down that road too.
You actually have three choices now... 1) is to shorten the axles and 2) is to shave the center-spacer,and 3) is to install spacers between the b-plates and the housing. I have used all three, but shortening the axles is the right way, in the long run.Cuz if you decide to start swapping pumpkins, you won't have to shave another spacer. I actually used the spacers at the B-plates for a couple of years, before shaving the axles. It's just too much work when you start swapping chunks.And sooner or later a leak will develop.
I sent mine out to the machine shop.
This is also a good time to center the rear wheels in the opening, if like most A's your housing is not centered between the fenders. If advantageous, and you have enough splines, you could take all the material off the same axle.Furthermore, the adjuster does not have to remain on the passenger-side.Whatever it takes to get the wheels centered.Someday you may need that .120 to be on a certain side. One thing to watch out for though is that the the center-spacer can move only so far until the slot hits the cross-pin. So measure carefully