904 Transmission Stopped Going Into Gear

Duster Captain said
Wouldn't I need to remove the forward drum from the input shaft if I want to replace the thrust washer on it?

I aligned the pump hales by hand and eye, started all bolts by hand, then tightened the band around the halves before torquing to spec. It all looks aligned to me.

I currently have the frictions and steels removed, but the clutch clearances were within spec when I had everything installed previously. I will re-check it before final assembly.

What do you mean "check if the thrust washers were flipped"? Do you mean check if the tangs had been facing the wrong way on a planetary gear?

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These two pictures show how I am assembling both thrust washers. Are you saying someone before me could have had them incorrectly installed?

I want to get everything right here, but at the same time if I get it to pass all final checks, its going in the car.

I seem to remember that some of the aluminum front planetary assemblies had a Torrington bearing where the sun gear butts against the inside of the planet gears assembly.
If this is the case you don't use a metal thrust washer between the planetary set and sun gear shell, as it will make your clearances too tight.
From what I can see in the first pic it doesn't have a Torrington bearing inside it.

I also remember there being multiple places the tangs of the washers would fit, but in some orientations they wouldn't sit flat like they should.
They had to be turned to find the right place where they sat flat.