Joe's getting up there, and can be a little crotchety. He has always been a very private individual - retired cop - who used - 40+ years ago - to deal by word of mouth only. You didn't just call him up unless you had a personal reference, so, actually he has made some progress!
But, the last thing he probably wanted to hear was a long explanation of what you (as a comparative novice)
thought was wrong (even though you may well be perfectly correct!).
You might consider sending him your bolt and asking him to make it right - letting him (who happens to be
the reigning Mr. Krag) make the choices. If you are sure on the cut-off, ask for it by name.
If that doesn't work out, go to
(You need to Login to view media files and links) and contact one of the parts suppliers listed there.