That has been my expereince with KTM's.. they all do it. Seriously though, I sometimes wonder if they aren't checking their incoming quality from their suppliers and holding their feet to the fire. The issue I have seen are typically little or no grease in the bearing - including replacements. So when replacing it may be a good idea to use a pick and pull the seal off and pack that bearing with a good grade of waterproof grease. Not sure how to do that if it is warranty work..