I would suggest contacting someone like Best Machine,,Hughes Engine or other Mopar savy shops and see what tooling they have /use and their opinions on your issues. Obviously something is wrong. Not a typical failure in my opinion.
Well I can tell you this, it is a very typical failure, I have been racing Big Block Mopars for 35 years and when you start pushing the limit of a stock block there are tons of issues. Cam bearing failure is probably the #1 thing wrong with B/RB stock blocks.
