I recently bought some "reconditioned" NXT Tour golf balls from Knetgolf. I've noticed that the dimple patterns are not the same. Some of the balls do not sound the same off of the putter. Is it possible this is because the NXT Tour balls change over the years? I have a suspicion some of the balls are not NXT Tour balls or are painted cheap balls. Is there any way to tell positivily identify the balls as NXT Tours? I am willing to send a dozen to the Titleist Staff.