Front drum brake spacer

I'm putting a twin leading shoe brake together and the cone shape spacer on the left side was missing when I purchased it. Although I do have 3 of them in my parts box but they are all different thicknesses, one is 0.2345 one 0.2650 and one is 0.2690 anyone know which is the correct size one?? Thanks in advance, Chuck.

The important part is the 1/8" height of the inner spacer ring.

The overall height could be any of those posted and would not rub on the hub.
The cup is around 1/4" high with the protruding inner part of the ring added 0.290"+
Part number NM18551