Valve shims

I have a 1981 k550. I have to change a few shims. My question is, do you rub a little clean oil on the shims and under the bucket or clean them off good and then install. I am thinking of cleaning them off so the light film of oil doesn't affect my gap measurement. Just looking for some input. Thanks.

Smear a little oil on them , if you have done the maths correctly this will not be a problem, also when the motor is running a fine film of oil will be under the shim anyway.

..it is supposed to have oil....that why the valve stem oil seals.

Thanks everyone. New shims installed. Clearances within the upper and lower limits.

Make sure to release the cam chain tension before re installing the cover. The details are in my signature.

If you havent, you can still do it now.