Setting up gears in an 8-3/4

I've got the backlash set at .0095-.010 (varies a half a thousandths from one side to the other). The papers that came with the gears said .008-.012

I never thought about it not changing as much on the one side due to the way their cut. This is the first one I've done.

Would you have a guess as to how much shim to add? Another .010 or .015?

Thanks for the reply, Tracy