Quote Originally Posted by tonyfoale View Post
Maybe I the odd one out here (it does seem to happen) but I see no problem with the as supplied version that can't be fixed by the removal of the washer between the two nuts. Lock nuts should jam together, a washer in between destroys that. Remove the washer and the system works fine.
Unfortunately, this isn't the reality in my experience.
Removing the washer only seems to exacerbate the issue of the entire assembly spinning together instead of locking, and it doesn't address any of the other common annoyances.
The addition of a washer appears to not be an arbitrary choice on the part of the designers, it "helps" a bit lol, but I still think the entire solution is a compromise to mass manufacturing and price.