Chew is fairly normal (in my experience anyway) from general riding & depending on the hub material. Pry it off, fit a new cassette and forget. Try and torque the new one on to ensure it's tight enough - I've read that not having them on tight enough can cause more chew.
Chew is fairly normal (in my experience anyway) from general riding & depending on the hub material. Pry it off, fit a new cassette and forget. Try and torque the new one on to ensure it's tight enough - I've read that not having them on tight enough can cause more chew.