It is okay. These measurements are approximates. If you turn your poundage up and down on a given bow the ata and the brace height will change as the limbs are moved in or out of the pockets. If timing/sycronization etc are correct.......... shoot it. In all reality people have been long and short stringing bows forever to make slight draw length or poundage adjustments. It also can allow more cam roll for increased speed. These alterations do affect ata. No big deal.