I did my first valve check and adjust recently at 66,500km. All were in spec but at or near min. I tried in vain to do the metric thing but found that it confusing so I reverted to thou (being an older mechanic) and it was then so simple to get my head around what I was looking for after taking the cams in and out a couple of times.
I aimed for setting max spec on all valves so most required .002" thinner shims and a few .003". As the shims come in .001" increments I simply needed shims 2 or 3 sizes smaller than what was in there. I used both Kaw and Honda (half the price) shims as neither had all the shims I needed after I swapped some around. I checked both local bike shops but they, like me, had HotCams shim kits which are in .002" increments and I'm a bit fussy so I took the time to wait and order the ones I wanted as I was in no hurry to have it finished.