T-washer = Thrust washer.
Unfortunately, I cant enlarge your pic enough to point them out. There should be a washer between every 2 parts that are able rotate at different speeds.For instance, between; the pump and the front clutch, the front and the rear clutches, the sun shell and the planetaries, the planetaries and their carriers, the input and the output shafts,etc.Theres almost always a copper face on them. Some are double sided.Some are indexed to one of the rotating members.Some are just piled on, others have to be fit exactly. Some are available in various thicknesses,to adjust end plays. Sometimes if the endplay is too great, even with new parts, a guy has to think outside the box. There is a very small one,almost dead center in that gear train, sitting on the pilot of the output shaft. That one comes in several thicknesses.
Make sure the output shaft is NOT sitting on anything, when its standing up. I use an old rim, and dangle the tailshaft through the center. Dont let the tranny fall over, you could be shopping for a new case. Some fellows have figured out a way to mount the trans to their engine stands.