B3RE. I for one am very greatful for your insight on this matter. any time you can get the geometry correct is well worth the benefit. very little lost motion and makes it so the cam and valve action are at maximum potential. there are many VERY intelligent members on this site. some are better than others at some things but they are just as insightful. i have a great deal of appreciation for the info. i have to admit that i am still trying to get a grasp on this subject but i am slowly getting it.