Take your belt off and grab your needle bearing and give it a spin (with the engine off of course). If it spins freely, your problems are elsewhere. If it is locked to the shaft or if it requires effort to spin it by hand, the needle bearing will require some attention. This is a common problem Polaris is having with these redesigned clutches. I had the same problem with my 2020 Premium Pro XP, thought it needed shimming (which it did) but, after the dealer shimmed it to their satisfaction, the secondary would still spin as if it were locked to the primary clutch when in Park or Neutral. The dealer told me that is "normal" but I told him I couldn't shift the transmission with the engine running. We went back and forth and he finally told me to leave and not come back until I had put at least 100 miles on my machine.
So, I dug into the clutch and found my needle bearing was very difficult to rotate by hand. After identifying the issue, I corrected it and it worked like it was designed and shifting was like butter. Then, I got my Stop Ride notice, went back to the dealer to get my new clutch, showed the Serv. Writer and Tech how my secondary was absolutely stationary in Park and Neutral, they said that's the way it's supposed to be. Of course, I had to inform them that I had to do quite a bit of work to get it that way and they had no comment. I just wanted to ensure they saw it was working perfectly when I brought it in and they committed to having it work the same way after they were done replacing my original clutch. Of course, when the Tech brought it out to me, the secondary was once again spinning as if locked to the drive clutch. I asked the Tech why that would be since it was working perfectly when I brought it it. His explanation was that it was "normal" for that to happen and just to drive it and "have fun". The only thing fun about it was listening to the these guys jumping back and forth over the same fence. So, once again, it falls to me to correct the problem so I can use this machine and I will because it really is a nice SXS, but not when it won't shift correctly.