Epicman said:It's not the pins that are the problem, it is the phenolic pistons in the calipers that are swelling with moisture and heat, then seizing in the extended position causing the pad to drag and overheat. Replacing just the pistons is not a common repair so calipers with a newly designed piston will have to be supplied to the dealer, then the cores will probably be factory rebuilt with new pistons. Also a large rotor stock will have to be manufactured for replacing any cracked from overheating.
I think you've nailed it.......
That "lack of maintenance" theory may have been applicable, in part, to the old Ford caliper slide pin problem, but doesn't hold water with the modern pin arrangement. JMH(Ford owners)O.