@fermata Brilliant – thanks for the link, I was wondering how that was going to go. Yep, the other nuts aren’t too bad – but I managed to break a couple of the pieces trying to get leverage against the nut, and I didn’t want to break any more. Another simpler solution was just to put an ordinary (non-Nyloc) nut on first and use slightly longer bolts, but the nut-holder looks more refined.
@vicious1 Yep glue, good solution. And, we can do that as well!