Tuning FX Impact Gen 3 sleve tensioner challenge

I went to swap my Superior liner with a heavy liner. Instead of the barrel shroud unscrewi•ng from the sleve tensioner, the tensioner stayed connected to the shroud and the sleve came out alone. I assume I now need to use a heat gun to heat up where the moderator connects and remove that endcap to get to the liner tensioner that is still connected to iit.



Any other (better) ideas on how to get the piece that connects the liner to the barrel shoud oput??