Rocker compatability question/Magnum

That pretty much sums it up. Only thing I can think to add is the top of the stud is threaded and different studs are threaded different lengths so you have to match that up too. Plus studs can be 5/16 on the bottom and 3/8 on the top, 3/8 bottom and top, 3/8 bot. 7/16 top, 7/16 top and bottom configuration so there's quite a few different ones.