What percentage of guys that build engines for club racers actually fill out real, no BS build sheets? Have a guess. It's less than 50. Small nuances of that information are not going to be released by the percentage that do. Furthermore, asking for a build sheet is rare. I think in 25 years of building engines I was asked less than five times. If you have a reputation of being honest and providing services as promised, it's not often discussed. If you do business on the other end of the ethical spectrum, you might get asked, and probably should be asked a lot more. But those same questionable ethics don't provide a good foundation for an honest build sheet. Moral of the story: Anyone can fill out a build sheet, that doesn't make it truthful. Making a build sheet part of this whole argument is specious.