A904 SUPER Servo. low/rear question

so you don't have to add sevo washer spacers or anything? this is normal? what difference dose it make? I just thought that tight smaller spring under retainer is the cush spring, correct? this is supposed to do this? just making sure I didn't install this thing tighter wrong, don't want to do again... car will going into storage soon.

When installed there won't be any end play because it'll be sitting on the LR actuating arm and have fluid behind it.
That cavity under the servo stays full of fluid even when the trans isn't in reverse.
The spring just soaks up a harsh engagement or bounce of the band when it applies.

Of course it would bother anything to shim it up either, so whatever you feel best with. :D