It may only be a minimal amount, but wouldn't the dimension of lift be a concern after machining?
Before you spend too much time trying to find someone to resurface them call Snedge (Jeff) and get a price on a set. IIRC they are very reasonable through him. 1-724-354-3136 is the shop number and let him know you are calling from CompD.
I'll talk to him next time I get to it, thanks.
IIRC last time i bought them they were at least 12$ a piece from cummins, with an account.
I paid less then 100 for a set of CR tappets I believe. Would still be nice to spend half that on a resurfaced set
pretty sure that is what I recently paid for 24v tappets, genuine Cummins from Jeff