I don't know how to check the adjustment without the tool.
It makes more sense to me if i think about it that the factory would make it so the thicker shim would be installed, not the thinnest, so that if a valve job is done that there will be room to adjust it. Possibly I have the order mixed up, maybe the "one dot" thrust element is the thickest. You can't measure clearance like a mechanical lifter. What is in the rocker you can think of as a hydraulic "lifter" for a pushrod engine, it has a preload, not a clearance. But not alot. It shouldn't be pressing down and actually moving the valve, the compensator should be pressing in.
I'll try to remember to look tomorrow to see what the ID marks are on the thick and thin shims.