Valve Adjustment question

Well how many miles since you checked it last. Lets say it's been 3000, check it now and if everything is still within .002 plus or minus of your target clearance then check it again in another 3000-4000. Dangers, if the clearances are closing up because the valve head is pounding into the seat then you risk the valve being held open and you'll burn a valve. If the clearances are opening up because of rocker wear or valve tip wear then she'll get noizey and eventually kick out a push rod and lifter.