My machine shop did a valve job and they appear not to have adjusted the valve lenghts on all occasions, so ona couple of the exahust valves, im finding that i dont have enough adjustment range to get the correct gap (e.g. where i should be able to get 0.25mm cold gap for the exhaust valve on valve 12 - i can only fit a 0.13 mm feeler gauge in when i have used up all the adjustment available to me).

in short, they have probably reduced the depth of the seat buit forgot to reduce the lenght of the valve to compensate.

Id rather not have to take the head off - am i right in saying that i should be able to "fix" this by installing different sized lash pads on the offending valves?
(and then, i presume id have to try a few to make sure i get onethat i can get a decent wipe pattern on?)