340 Crank bolt threads issue

Thanks for all the replies. It's funny how the mind works, I got home last night and was thinking "wait a minute didn't I buy a large size tap and die set year ago...?" I went out in the garage found the set which is a Craftsman set from the days when you could walk into Sears and they had such things in stock, so maybe 15 years ago or so I bought it. The size is 3/4-16 for the crank bolt. I chased the threads, and they were resistant the whole way down as in I had to chase the whole set of threads, but the bolt goes in properly now. Yes, I was thinking the threads were stretched or an impact gun was used etc. but there seems to be an explanation here so. Yes proper tools right?