Big Phil,
I think the brake dics are not the correct ones. With this swap (using Maxima calipers and brackets), there will be a gap between the calipers and the brake center hubs. The correct discs for this swap are the 1984-85 300zx non-turbo, non-canadian rear rotors, and they need to be turned to a diameter of 11.225 + - .025 (any brake shop can do this for you for less than $10 each). These are the same dics used for the 240SX rear disc brake swap sold by MM. When the correct dics are used, all of the pads will be on the dics. I think "Auxillary" posted a link recently on where to get these discs for cheap. The beauty of this swap is that it will fit under most 14' wheels (slotted mags) which does not apply to your case.
Hope this helps,
Huy