The point I made was ten thousandths is taking off five.... and five thousandths is nothing....Do you agree or not? Buy a bore gage? I knew one guy who owned a bore gage and he wasn't about to lend it to anybody.....They cost big dollars back then and it wasn't until overseas imported stuff hit these shores that measuring tools became affordable
Anyone who depends on a scripted TV show like Uncle Tonys to learn how to work on cars will never amount to much of a mechanic and that includes every show out there today.......Learn the way I did by reading watching doing it making mistakes and correcting them.....The same way I learned my trade
Maybe you had the dollars to take a engine to a shop and have them rebuild it and great for you, some of us weren't in that position and we learned and made do