I have an atlas 10d and i need the washer that goes behind the screw gear part number 9-114..called clausing and they wanted $52 for that washer..so figured i would ask here to see if anyone has a lead for me. Thanks!
You might be able to find one on Ebay. I made one for my 6" Atlas, took some careful filing to make the inside slot for the key but it can be done by hand.
ps you can also use one of the smaller gears as a spacer
If you don't want to make one, maybe give Joel a try at mymachineshop.net
He doesn't show one one his page at the moment, but I suspect he has a lot more inventory than is actually posted. Be worth asking anyway.