Kieth Black block

Keith Black specifically machines the block to the user's specification - including cylinder wall finish - and they are VERY good and particular about them. There is a reason the the money they get - and that's quality of everything from casting to machining. If you buy anyone else's block I agree with OMM. And by all means when it's delivered it should be checked to verify all is what you wanted. But it's rare that there are any issues with them as delivered - and the couple I've heard about KB took back and fixed on their dime.