After the past few hours trying very hard to remember,it came back to me.The numbers I have been using for combustion efficiency were stated as exactly that in military training manuals.I guess considering the source,I shouldn't be suprised if the information was given wrong.Now I'm going to go back up the page and look at that link on HC readings,maybe find out how wrong the military is again?Hahaha.I had formal training before the military,but of course they had to train me in the "correct" way to perform automotive repairs.