Hello Morton,
As you can see, I have replied (silly me) by PM only. If the content of the PM is helpful, feel free to copy/paste it to this thread for others.
I cannot for the life of me find "sent PMs", so that wall of text is now with you only
To save others the suspense, I'm very happy with the mount, and it's doing a great job to this day, with only a little mechanical attention been paid to it.