I agree, shifting gets better when the hub is broken in, like after 1000 miles. After that there was a long period when the adjustments were easy and lasted a long time. But as the hub got on towards 5000 miles on it, adjustment got very difficult. I did partial overhauls several times, getting modest improvements each time, but it was a lot of work. The hub was in rough shape, but not destroyed, when I dropped it off at the bike shop in March. Mileage on the hub was about 5300 at that point. So arguably the mechanic destroyed it, and riding did not. The hub is pretty destroyed, too! I thought I'd try to fix it at some point... probably a waste of time, though.