1925 Buick parts shown and unknown

[Hubert_25-25]

I am assembling my engine and I have 2 parts that show in the parts book that do not look familiar.  

For the camshaft assembly on the threaded end, working from front to back, I have in this order. 

Nut/lock washer/special washer/Pulley/timing gear/thrust plate.  I did not see part #47428 camshaft spacing collar.

For the clutch, there is a photo of part 36408 clutch hub washer.  I don't recall seeing this part with any of the clutches that I have.

 Everything seems to be in order, but I am just wondering if I am missing something.  I was missing some oiler rings for the water pump in the past that I was not aware of and Kyle Sliger made them for me.    Thank you,    Hugh