My husband and I are looking at purchasing a 15x33 Aqua Leader Pool. The pool looks like it's in great shape, but some of the sides appear to be bowing out. Is this normal? Is it something we should be concerned about? When we reinstall this in our yard, will the walls straighten out? We're very excited about this purchase since we've enjoyed owning our intex pool for the last three years and believe that now is a good time to upgrade for us. I just don't want to buy someone else's headache.