Reply to Removing Knobs from S2

I'm not sure if this has already been discussed but I searched google and youtube for solutions and haven't been able to find any. I am trying to remove the knobs from my S2 to replace them with the Chromas but they won't come off. The faders popped off easily enough but I feel if I pull the knobs straight up any harder they'll break.

Anyone have any experience with this?