Zero Camshaft Endplay

There are 3 different depth cup washers that I am aware of:
The more or less "flat" washer that was used on Magnums; short nose cam, no eccentric.
A shallow cup washer; used on LAs (both roller and flat tappet) with a long nose cam and the fuel pump eccentric.
A "deep" cup washer; used on factory LA roller motors with a long nose cam and no fuel pump eccentric. May also apply to some aftermarket cup washer designed for guys not running an eccentric (electric fuel pump) on a standard cam.
I don't have the depth dimensions handy, but the difference between the std. cup and the deep cup washers is obviously the same as the thickness of the eccentric. It looks to me like all your cupped washers are all the same depth.
Try bolting up your timing gear with your cupped washer and no eccentric, and see if it falls within spec.
If so, then what you have are cupped washers for long nose cams without an eccentric. Try to find one of the shallower cup washers from a standard LA.
If not, measure up the thickness of your chain tensioner plate and compare it to a stock cam plate- I'm very wary of replacement part dimensions lately... If the tensioner plate is thinner than the stock cam plate, you may have to run a thin spacer between the plate and the gear, or have one of the deep cup washers cut down slightly to the depth you need.
Just how I'm seeing it, maybe someone else has a better idea.