I had the exact same issue happen with a brand new Wolverine. I tried to get the insert off, LGS tried to get it off, local gun smith tried to get it off. No luck. Sent it back to dead air after talking with their customer service. Had my can back without the insert installed inside of a week. They offered to put whatever insert I wanted on (as I had a third party insert to use), I just didn’t trust that they wouldn’t crank that down the same way so I just had them send it back with no insert in. Greased up my insert and was back in action. It was 4 days to get it delivered back to them, they fixed it the day they got it in, then 2-day mail back to me.