When I was in the states last year I bought the bits to upgrade my drive to GT, but as I moved country to a new job, I didnt get around to fitting them until now. While mounting the two sprockets, I noticed that one didn't seem to rotate on the shaft as easily as the other, so I took the rollers out to see why. Much to my surprise there was a "bump" on the inside of the sprocket tube where the rollers sit. The bump corresponds to where one of the two screws holding on the cowling goes. You can see the bump in the photo below
Will Hobie replace this defective component for me free of charge? I could pick it up from Auckland New Zealand when I'm over there in a couple of weeks time