thanks for the pics and clarification. however, my confusion remains. would not turning the the nut CCW move it closer to the rocker, thereby making the clearance smaller? sorry if I'm not "getting it".
What I'm imagining, I guess, is the top of the valve stem is threaded and the adjusting and lock nuts are threaded onto the valve stem...is this correct?
In essence, by moving the adjusting nut, you're shortening or lengthening the valve stem (or length of the valve), right?