Thanks for the compliments and the tip on re tightening them.
The angle brackets really tightened things up. So much that I am not going to "X" brace my center poles. Yes, the holes for the carrage bolts are square to keep them from spinning. The hardware is galvanized and has lock washers to help keep them from loostening.
I ran them off on Amada 55ton cnc turret press so everything was exact on the brackets, which is more than I can say about my pole placement.
