Questions on checking valve clearances

[PunchBuggy]

I checked my valves on my 2011 GS for the 6000m service. One one of the intake valves on each side my .152mm feeler gauge wouldn't go in. But it was the thinnest feeler gauge in the set so I couldn't go any further. Should I worry? Also, there are 2 numbers for each standard and metric size on my feeler gauges. Is this a range or something else? I went with the bigger number.

[marc]

Sounds like you have the Go-No-Go style of feeler gauge. Yes?

Danaher Group KD Tools Go-No-Go Feeler Gauge

They are used to tell if clearance fits within a range. The front of the gauge is thinner than the rear. If the front fits and the read doesn't then you know you are within the range.