Well one reason I love these hubs is their lack of noise. I noticed though that lately they have been getting louder. Has anybody else using these hubs, or any DT hub noticed it getting louder? So I emailed DT swiss and they said do an overhaul. I had no idea but this thing requires no tools for the overhaul . Well this is only an overhaul of the ratchet system. They said use a quick release to pop off a cap and it all slides off. Well i did what the man said, i burried the ratchets with grease and now its silent again . I must say though, for all of the mud riding i have been doing since the snows melted I am thoroughly impressed with the seals performance. Has anybody else noticed their hubs getting louder?