News:
First of all, you didn't hurt the thrust washer when it slipped ,did you? No you don't have to check end play, I just hope you got all thrust washers in the right place. Your endplay will not be accurate and you cannot tell if it is all together right until you have the extension housing on and tight to the case with the snap ring popped into the bearing groove. ( that's why I was having you do that first in the reassembly steps) The output shaft has to be held in it's proper location by the output shaft and rear bearing/snap ring before you can check it.