I may be wrong here but don't the Kingpins have a TAPPER?? Also make sure that the locking pin has been removed or you could drive it for a month and it won't move. I have removed quite a few kingpins and I can tell you hitting your thumb with a 2.5 pound sledge hurts way more the second time you do it, usually followed by several words that would make a longshoreman blush and a dent in somthing else.
