Having extensive experience with the Detox oil extraction unit, Motiv soaks up oil the slowest of any ball company, and having used Motiv in the past, their covers retain reaction for a very long time and take well to surface changes. There is some other factor here causing those balls to lose their reaction. A shop co-worker of mine is on with Motiv, and he DID have his Sting lose reaction, but after 30 minutes in the Detox, it was acting brand new. I would also expect the Jackal to soak oil up faster than the other covers.