Forget it YR. He doesn't want to learn anything that conflicts with his current perspective. My CAD drawing of rocker motion showed exactly what Smokey said the rocker action should be and he still says that's wrong, so, as the saying goes, "Some men you just can't reach".Did you watch the webinar I posted in the Race Forum? Darrell Reid gives an explanation of this. If you don’t know who he is, you may want to see what he builds.