I have been frustrated with my tripod for quite some time now, but had not been able to pull the trigger on a new one.  Over the last 24 hours, I discovered two very good reasons to say “goodbye” to my old tripod and “hello” to a new Gitzo. I had taken some photos on Saturday using my tripod, but had not taken it down, so last night, I decided to put it away.  As I was taking it down, the head disconnected from the mounting plate, causing my camera and my favorite lens, the Canon 24-70/2.8L, to tumble to the floor.  The camera appears to be fine, but the…