Wolverine Ultimate replacement sticks

I've had my Razer Wolverine ultimate controller for a good while now and it has been a wonderful controller. However, my analog sticks are beginning to wear down from use and I would like to know where I can purchase a replacement. I'm aware that my warranty on the product has expired, so I do not expect a free replacement and would be more than willing to pay for the parts. I have looked at the RAZERCARE store and the only analog sticks available for sale are meant to be used on the Raiju controller. I believe the measurements of the Raiju sticks are different and would not fit due to a thread I saw where someone had the same issue as me and purchased the Raiju sticks. If anyone knows where you can buy new analog sticks for the Wolverine Ultimate it would be a great help, thank you!