Very good point Jburry! I’ve seen this too. Thank You.

Another thing, If you feel a small dedent or bump while performing an inspection you may have a damaged race or ball and the bearing needs replacement.

Always feel for bearing problems out of compression, the free turning area. Don’t confuse the problem with rod lash/slop.

Note some ducted fan engines may have a "bump" or "click" from the rotary valve, this is normal.