help needed with 904

I couldn't say it better than Tracy did, so this is a quote.
In this case the endplay was too tight, but you get the idea.

"The front clutch carrier to the front pump and thrust washer between the clutch packs should be .061~.063. The drivetrain end play is set using different thickness thrust washers between the input shaft and output shaft. They come in 3 different thicknesses but by your description your issue may be the thrust washer between the clutch packs is too thick. If it's not .061~.063" change it and re-check the end play. The factory serv. manual calls for .022-.091 end play. I like them tight so things aren't slapping back and forth and I shoot for .020".