Howdy Jeepete
You don't need to be humble about it. I agree with everything you say, except the %. My experience has led me to think the odds waaay favor a cracked head. I admit most of the experience with compression getting to the fluid jacket has been with Chevy's and not with the little six.
Except for the small dissagreement with the odds you have nailed compression leaks.. congrads.
Big Jim <img src="/forums/images/graemlins/kewl.gif" alt="" />