ive got a western ultramount. the metal around the head of the large center bolt is rotting. i'll have to pull the center bolt out and cut out and replace the rotted metal. anyone one know what size bolt it is? i want to have one on hand in case i have to cut it out. i work for a railroad, we probably have one some where. i assume everything pivots around that bolt? i still cant look at that contraption and make heads or tails on what that whole shebang is supposed to do.
thanks
thanks