please help, I pulled my king pins apart to rebuild and the new kit from napa will nor work. the new pin is 5 5/16" long and 7/8"thick. the old pin is just shy of 5 5/8" long and just shy of 15/16" thick. the new lower bearing is taller than the old layered bearing the came out of my truck. the truck is an 8 lug brake setup.