has any one replaced the cam bearings in the right case with bushings. I have a 66 xlch that three cam bearings spun in the case. the holes for the bearing are to big to put new bearings in. this is a hot rod goes to the strip and bar hops. I want to use bushings. they used them in k models and they use them in late sportys. any info from someone that has done this thanks. I can machine the case but don't want to weld it.