So now you want me to come back at you and tell you that I did not "forget" anything? I wouldn't even have said something, when we were talking about 1 or 2 minutes difference in runtime. And: since the major difference, his completely ported version vs. my stock testing enginge, has already been found, you can safely take your list and put it to good use in a book about runtimes in general.
Rest assured that I do not drive a 10 pound mud-loaded never maintained truggy with no bearings and 15 yrs old fuel. I think I wouldn't have been handed a new engine to test if my gear was not in top shape. With THE Car I actually drive one of the lightest cars with on of the most freely running drive trains, I guess? And I think I stated in my post that all the major circumstances that affect runtime were taken into account (tune, pipe, fuel, plug, track conditions) and I still could only race like 8:xx mins tops and therefore can never see a stock Arrow GTR in a 12-13 minutes stint in a race. But if you show me with your list how you can make this testing engine I have had run 12-13 minutes under race conditions, I will sure as hell buy all my future engines from you and happily pay the overseas shipping costs.

I know that there are people who manage to have a engine like the Plus 4,
which is perfectly capable of long stints, only run like 6:30 and complain about the bad milage in forums, but if I was one of them, I wouldn't have posted here, I would have bought an Arrow after Mark's post and posted in two weeks time because I only could get the sucker to run 5 minutes. In which case your list would be appropriate.