Looking for something less than a 2" drop ball mount. The drop for my trailer is supposed to be at least 16" - 18", and with the 2" mount that I have now it's 15.5". If I turn it over it has a 3/4" rise, and that makes it to high. Do they make a 1" drop ball mount? I have a 2" ball and a Class III or IV hitch. Thanks