OK engine experts - I just had a nice conversation with a local well respected machinist about getting my 4.0 block inspected etc. He has done 4 of these engines and he said that every one of them stripped out the head bolt threads when being re-assembled. He recommended that I do a steel insert for the head bolt threads on the block first thing - and then he could deck the block flat. I have never seen or heard of anyone having this problem - so I thought I would put it out there for any thoughts/experiences any of you have had with this! I guess there are kits for the insert? Anyone done this with their blocks and are there any tips I need to know? Thanks!