I cleaned my owb, it gripped for about half a pull then sliped again, Cen have sent me 2 owb's not that i'll need them as i have ordered the backplate and an smd box starter as i really dont want to spend that much time cleaning and replacing owb's and no doubt they wont always be free from cen thats for sure. I guess i can keep 1 just incase i ever need it and flog the other on the bay