[K Sykes]

Exactly - wasn't tracking with you. Yes you measure the upper valves from below and vice versa. But you do the actual adjustment on the other side. Meaning put your "Go" feeler between the foot of the rocker and the cam from below (for the intake valve). Assuming it fits, try the "no go", if it doesn't go, the valve is good. If not, the valve needs to be adjusted. Put your "go" gauge in the same spot and go to the top of the engine. Adjust the intake valve to be just snug with the "go" gauge in the gap. Go back under the car and try and pull the go out. It should be a tight pull, but not really tight. Double check by trying the "no go" gauge and if it won't go, you are done.

I wish I had taken some pics, I just did mine saturday.