Goofy Thrust Bearing Gaps
Interesting... actually the main cap may be fine but the shell cocked in the cap. Check the cap surfaces and where the shell contacts the cap and make sure there are not burrs in there.
I am really not sure that being equal on both sides is all that critical, as long as top and bottom halves are generally aligned. I know I have never worried over it..... and have seen one half of a thrust bearing worn more than other halves on one side only with no adverse effects, so it must happen. I don't even recall ever measuring on the sides.