cone sure grip re build question

got this cone sure grip unit in a 8.75 A body assembly that I purchased.
The PO said he did not know much about it so I figured I would go through the cernter chunk to see what I got.

disassembled the sure grip
https://www.flickr.com/photos/13718356@N02/sets/72157648849620302/

the ends that print into the outboard cups don't show contact, I checked the remaining clearance using clay. Did that first with just using hand pressure to push on the cones, loked like .020 to .025 remaining clearance.
Did it twice more,, fully assembling the unit and running in four of the assembly screws.
That shrunk the clearance to .010 to .016, basically really thin.

Think I read that .060 per side is a good starting place for clearance, is that right?
and for shims,, if I have .045 cut on each side, I would shim each side of the springs .045 or .090 total..

, there is some gauling on the back sides of the cones where they run on the center sput gears,, should be the third photo from the right..Any thoughs on that?

thanks