Thanks for the clarification. Slight preload is good, slight play is not.
I remember a specification in the (surprisingly complete) instruction sheet that comes in the Set-20 box, but don't have one in front of me now. I know I kept it though, because detailed instructions were few and far between. Nowadays there may be better stuff on YouTube, but a few years ago there was not much on the Set-20 setup.
The instructions were was very detailed, but still very hard to equate to actually doing the work. Kind of typical of some instructions unfortunately.
The problem that I wish someone would deal with (and maybe they have, judging by the OP's shim pack) is the lack of proper retainer plates for the Set-20. The factory retainers were domed so that they would push down slightly on the bearing/seal, but still bottom out on the housing flange (or brake backing plate) before too much pressure was applied.
The flat aftermarket retainers commonly available need some kind of spacer like the OP has, or just a proper re-design to get the preload just right.
Like the factory did it.
Now that I've said all that, I'd better do some more googling to see what's out there.
By the way ANNMRGT, where did you get the brakes and axles? And which one included the shims?
Thanks
Paul
Maybe there are proper retainers out there, but I have not looked deeply for them yet.
Paul