I am changing out the springs on my 68 and decided to redo the rear hubs and brakes while I am at it. When I took the brakes apart there are 2 brake adjusters on the backing plate. I thought there should be one. I measured the brake drum and it is 10" although the backing plate measures 11". I believe that is correct as the drums need to fit within the backing plate. Question is - did 88 come with 2 adjusters?