The both heads up thing is purely cosmetic. As for your rid not fitting I have no idea why. My best suggestion is maybe a small washer behind your but lock to push it out to where it should be. If the rest is square there is no reason this should be wrong. I haven’t seen this problem in a long time and they just put a washer and called it a day. Should not introduce a noticeable error.
Reply To: z thread nutlock again (old, original version)