A few years ago (and probably still on his site) Mike Ware at Muscle Motors had a blurp about the cam bearings not fitting 'as-designed' as it has to do with Chrysler's tolerance/alignment problem in the cam tunnel and is quite common. What they do (and I've done as well) is hone the tunnel for proper fit/crush, then...no problem! If you don't want to go that route, get yourself a 3 corner scraper and some prussian blue and scrape them in or just trial fit the cam and scrape until it 'fits'.