Ernie - Edels & Shelby's are not the same - many differences.
Tony R. - Scott does not need to call Bill - Bill has contacted Scott.
Undy/Whatsa' - I doubt whoever originally sold the heads could be located much less warranteed at this point. Especially considering the circumstances. In my opinion, KC has agreed to a very fair arrangement for Scott.
Regarding all the suggestions to let professionals do it, I agree but becomes a somewhat mute point this far into the journey. Scott's insisted on trying to do the work himself - I commend him for his resilience but will have to live with the consequences of doing so.
Scott - if all else fails, I'll buy your motor and install my Bimmer motor in your ERA - at least it will run nearly every time.