I was typing/editing while you posted. Please read all again. I will stand by my opinion and stick my neck out and say your NOS nuts are not. I don't think they are supposed to be deformed thread. Until Tim posts his parts book that says otherwise.
You DO have a castle nut by definition. There ARE locking castle nuts. I would not use them. Use the procedure I described.

Too far away? Like what do you mean? The original hardware and components stack up was determined by those engineers when they put in the hole. You have non original hardware or are missing something. You can use flat washers to catch up or a different non locking nut. This is more proof that the nut is the wrong nut. You are going to ruin the bolt threads!!!!!!!!!!!!!!! with those deformed thread nuts. They are not supposed to be reused, ever. They also shave up burrs and the next locking nut cuts the bolt more.
Peace out.

Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn