Have you checked both fronts Wayne? look at both to make sure you have'nt got a mis-match of parts already installed, will make things even more confusing
As long as they are both the same then you gotta check all 4 new front shoes are useable, then decide if you want to modify them or send them back. Remember you still got the option of either modifying them or installing them without the auto adjuster, if that clevis pin is the only difference I would still drill them, won't take longer than 10 mins to do either side. I can't get to the parts place till mid week mate, then I still need to have a look at 'em before I pack 'em off