still having problems, need advice please

something is really wreaking havoc on my mind. just checked again and had 13.72 at the battery and 14.02 at the alt post, BUT.....with that, I am now showing 8.3V at neg batt to block, 10.3V at block to frame, and 4.4V at block to firewall. very frustrating

14.02v alternator output is right on the money. 13.72v at battery post is o.k. .3 volt drop is nothing harmful.