Engine decking issue(help)

So i have a bit of a issue that was brought to me by the machinist doing my block.
Its a standard 340 block
Had him do boring, line hone mains(due to installing studs) and was going to have hin deck the block to make sure its square and surface is ready for my eddy heads.

Here's the problem-block has never been decked and i bought it off a reputable member. He had the block checked with a machinist for deck height and all corners were above 9.6 or close to it(typical for la motors).

My setup crank stroke÷2+rod length+compression height=9.59

My machinist called me other day tell me block is already at 9.59 and in order to square it up it qould have to go to 9.58.
I look at my options i have as i havent called back yet

A) my machinist didnt measure correctly and i leave the deck how it is(concerned surface wont be smooth enough)

B)Have him deck it to 9.58 as what he says and run thicker gasket maybe cometic

C)Special request just to take off barely anything to ensure smoothness(block could still be out of square though)

Let me know what u guys think i wss planning on stopling by there before i head to work tomorrow