I made an idiot mistake:
I failed to loosen one of these nuts on my N5C TT build last night even though I have already properly built an E5 head.
I noticed that the M3x16 bolt must be replaced. I replaced it. I can give it a good pull (as hard as I can pull on it by hand without tools) and it does not pull out of the "Ball Link Adapter." That is to say, there are enough threads left in the "Ball Link Adapter" so that I cannot pull it out. Do you think it would be prudent for me to replace the "Ball Link Adapter" or do you think I will be ok? I did not notice any metal shavings coming out of the part, and when I looked in the hole, what I could see of the threads seemed to look ok.