I'm wanting to change to a slug liner and I cannot remove the standard superior liner that's already installed. I'm not using o-rings on the barrel, I have the carbon fiber sleeve installed. Only a tiny bit of the liner sticks out and it's hard to get a grip on. I've even tried wrapping a little piece of neoprene and around and using pliers but It was starting to leave marks on the end of the liner. Is there anything I could try to get this liner out?