Valve clearance re shim or leave

[Slippy]

Just checked my clearances in my 2003 fazer has 27k miles on it. All the clearances are in tolerance but only just. All my inlets are .11-.12 and exhausts are .21-.22. Question is should I leave this as it is or go get it re shimmed so they sit on the upper end of tolerance as they get tighter with age! Thanks in advance

[unfazed]

If they are all that good and the feeler guage slides in and out easily I would leave them and check them again a 40000 miles