My SYE output seal has been squealing for a couple months now and I finally got around to changing it out. When I removed my Speedo gear I saw it was chewed up , so I checked out the drive gear on the shaft from the Speedo hole and felt it and I can feel some damage to that as well . I’m now pulling the SYE cover off to further inspect the damage . Any idea what is the cause of this ? Was it just not properly seated by the shop who installed my kit 3 years ago ? I’m about to order another Speedo gear and but I’m wondering if the OMIX drive mate gear is universal for all np231 shafts ? It’s an AA SYE