Your right Jerry,,I understand if your class racing or something similar...that makes total sense&i would be just the same doing that deal.
You can have all the detailed pics you want ant still might miss half what's staring you in the face. I was asked quite a few questions and answered them honestly...what they didn't ask was probably more important,, that really can't be seen in the pics. Valve angles, seat angles and transitions, long wall and short wall differences, active areas , ex port to header transition and many other things...they didn't ask, so I didn't tell
In 2011 I had a total brain fart with carb...it was down 19ft lbs and 35hp at the event compared to home testing, which ended up being 8th place. Take the carb fart out of the equation and it was a 2nd ....only 60 points seperated 2nd place and 8th, that's how tight it was in 2011