At what point will discovery of bad chips be done?

Will only good chips be going onto K16 boards?

Or will we only find out if chips are bad once we get our K16 boards?

Part of why i am wondering this is if possible I would like to have K16s made from any full sets of 16 good chips I have, and K1s of any odd chips left over after bad chips are weeded out.

-MarkM-