Ok, so the next thing you have to consider is the Cylinder Deck Surface. The real question is how flat is it in relation to the Valve Plane? Ok, what is the Valve Plane? That should be the Surface that each Valve should be exactly flat with when closed. In otherwords, each valve should be the same height above the Cylinder Head Deck Surface. If not then the Valves are off or the Deck is Crooked!