You’re welcome, and thanks for reading!
There are two schools of thought on the tightening of the endpin screw. Joe Guastafeste of the Chicago Symphony always told me he tightened his endpin with the screw NOT in one of the notches on the endpin, because he was concerned about rattling. I tighten the screw directly into the notches, because I worry about slipping. And with the Chromatic endpin, setting the screw into those notches takes care of the angle problem, I think pretty securely. So I guess that’s what is working for me.
As for all those excerpts, well, I presume Joe had ’em pretty much nailed, and I don’t.