checking valve clearance

[blue oval 50h]

. Most people will tell you to pay attention to the contact patch from the tip of the rocker to the stem of the valve.

Yes, you should. Before putting on the rockers, use a sharpie marker and color in the entire valve stem. Assemble rocker and turn motor over checking p/v clearance. When you take the rocker off, make sure you have a wear pattern on the center of the valve stem. Real easy.