It shouldn't shouldn't cost much more to do the valve adustment. Once you check, if needed, you pop out the shim, check which one you need, pop it in, and keep the removed shim for another valve or car.
When my Inspection 2 was done, a few valves needed to be adjusted.
'95 Alpine M3 LTW
'00 Dakar M Roadster
'02 Topaz M3
Red/White SRF #4 (Chassis 561)