You can see the stance I referred to here. The front of the A unit sits a lot higher than the rear for some reason.
I still need to body mount the front step. When I do that, I'll take a look and see why the front sits so high. If I could drop it low enough, I wouldn't need the spacer between the pilot and shell.... but then it wouldn't match the B unit, and that is already bottomed out as low as it will go. I already trimmed the skirts to clear the side frames as it is.
The B unit I bought had broken 3 rail couplers and missing diaphragms so I used a folder paper one from Keil-Line in between the A & B to allow tighter curves while coupled so close. Plus they take paint well, unlike the rubber ones I was going to use. 072 and cross overs are no issue for these.