I dressed the secondary DEC-washer with the sanding-drum, but, initially, it would not drop down into the DEC housing. It was a bit befuddling, "What happened???" But, here it is, completed...
The inner diameter was correct, but I had to reduce the outer diameter, considerably. I had described the outer circle accurately, yes. That was the primary instance where I had to lightly apply the sanding-drum, to "sculpt", round and round the outer diameter, several revolutions -- that French, then that Russian -- until, at last, it dropped into the abyss.
This is an example of where I use shears to dress the outside diameters, in this instance of the washers for the needle-thrust bearing...
...and roughly shaped. There, the inner diameters had already been completed.
Then, the outer diameters here, after the sanding-drum, paper-sanding and polishing...
Incidentally, this is what I'm replacing with those, and ill-fitting...
Yea, just enough to get by, just enough to get it out the door and onto the seaborne container.
The total thickness of the needle-thrust bearing and its two bronze washers is 0.122", almost twice that of the plastic washer being replaced, and negligible in the end.