To remove the ferrule I would suggest what I was told to try on a butt section here. Warp the ferrule in a plastic, I used a freezer, bag. Then plunge the bag wrapped ferrule into boiling water. Let it sit for about 5 minutes, then remove. I had do it about 3 times then sat and "worried" at it for a few minutes and bingo, got it off.
Worth a try.