I will let the description tell the story. Rawze is right about checking this stuff. Dont assume just because its rebuilt that its good to go. The head was installed and they didnt figure it out until they tried to adjust the jake. Lots of lost labor.....
I would venture to guess that is one of those mistakes that only happen once.....after all that labor to discover it.....
From what I've heard from Detroit part specialist, and techs at S&S is remanned S60 parts are a toss up such as the heads and vpods in particular. Buy new is your best bang for your buck.