Well I don't have any photo's to show however I designed my table with the correct over hang so I have no mounting issues.
The spent primer issue was very simple fix. I folded a business card in half and stuck it between the primer cup and the place it attaches to the holder. It puts some extra tension on the cup keeping it in place better. The result is in over 18 years no primers on the floor.
I have not had any issues with non spent primers filling up the shut or falling on the floor, though for some reason I can find more than one way to break that little thing. I am on my fourth replacement.