Look at my hitch set up please....

The dealer where I bought my trailer hooked this up for me. So I would have trusted that they knew what they were doing. I had to purchase an 11" shank because I need to drop the ball down so much, due to the under slung coupler. I am learning so much. I sent this pic to the dealer where I purchased it which is now under new ownership and they asked me to bring it in so they can make it right. I just want to be well educated when I go as to make sure things are done correctly this time.