Thanks for the information. I am going to have to rethink my shelf placement also. In retrospect I think what through me a curve is the size of the base that spreads out the weight, but by holding them up to my quess (Alcatraz)I can tell the weight. My only comment is what kind of wacko enjoys lighhouses so much that they weigh each of them. I'm not sure what it takes to do that, but thanks for the effort.