Razer Wolverine Ultimate Parts Nowhere to be seen

I have a Razer Wolverine Ultimate and my thumb sticks have had an accident with a cat Biting them and are unusable now. Is there any way I can actually buy replacement parts for this? You would think these thumb sticks would be available for purchase just so I can have multiple of ones I enjoy. Someone please respond to this asap. I need new thumb sticks and am not buying a whole new controller.