How big are your hands? Not much room in that port....but a good idea. Could have made a port three times the size, and it would be REAL EASY! The common sense injection was skipped at many schools for too many years....sad, but true.
That is what I like about AHS: If they find a way to improve a product.....oh my gawd...
they make a decision and actually DO IT!
EFM, AA water coils: Why Not Fix the damned issue of no maintenance of the gaskets and studs. (OK, they did...some 50 years later....) Engineer out the 'idiot' part of the problem and move on to the next revision. If Detroit had done that 60 years ago, we wouldn't be where we are today.
As some of you have figured out with the differences in EFM Boiler blocks. the subcontractors made intelligent revisions, probably without corporate approval, and history says: Thanks for taking the initiative, Cobco, Fitzgibbon, etc.