I'm getting my head serfaced cause it's a few thousandths out and I can't seem to find the service limit on the block.
I don't want to waste effort putting a flat head on a bad block and don't want to remove and tear down the block for machine work if it's not necessary.
Thanks in advance.

 

from the manual..

up to 0.05 mm is standard.. 0.1 mm is the limit..

 

Thank you sir.

 

a used block is never flat. and they all warp in the same spot. only a remachined block will ever measure flat from what I have seen.