I was towing a very large boat when the truck slowed down to a stop. I just barely had time to pull over. I had to drop boat and perform several hard stops in FWD and Reverse

this is very scary,i suspect inner hand brake cables binding and not releasing .Will make own 3way hand brake adjuster. ford cables $+/_725 for front cab cable .alone .Our cable man cost $15.New pads fitted .drums checked if true.This fault lets me suspect my working of rear abs as well.