Yep, this was discovered a few weeks ago. One of the members here (94guy) had the very same issue (after he bought the wheels). I'm not sure if he was ever able to find a resolution or not. But I do know he was in direct contact with Weld Racing, so that's probably why they put that clause in the warranty now. Check out his thread:
http://www.camaro5.com/forums/showthread.php?t=134593