Mind Trip of spacers, thrust washers, end-play, side-play, stack height, clearances . . . then, when you get it all correct . . . the bearing retainers are aftermarket "junk" . . . and it's a switch, swap, trade, mod, deburring game of switch & swap. Trying to get all the parts to "like each other" is the hardest part.
Why can't everyone just get along ?????