Cam Bearing Advice

I found the problem with the undersize cam bearing journal in the block, back in the "70's. Found it the hard way when I couldn't get the cam in the block/bearing. I thought the machine shop screwed up when installing the bearings. After that any big block I took to the machine shop for hot tanking and cam bearings, got the rear cam cavity checked, and honed to the correct size. Once and done. Don't have to modify the bearings or cam.