So I bought a used D30 ARB, didn't know that there were different models of these things and this one looks to be the older version, the RD30. And, it appears I'm missing some parts, but I'm confused.

It looks like according to the RD30 Instructions that there is a "Master Shim" and "Shims" that go on the outside of the bearing (the bearing end with the Seal Housing). Is that Right?? The Shims go on the outside of that bearing? Is it a special "Shim Kit" just for this purpose? I know the carrier bearings are specific to this. I just have the locker, I need to know what else I need to get this thing installed. My spider gears are just about all blown out and I got some winter wheeling to attend really soon.