I've noticed that as well, Inventor.
I was never happy with things just as they are, gotta make sure it is just as it should be.
Though I'm more of a jury-rig type inventor with day to day objects, can a piece of wire twisted just so fix this? Can I brace that against this better? Can I whittle that edge off in order to smooth the action out fully?
My numeral/theoretical inventions though, they follow the pattern you're talking about.
Never thought about that really, wild.