The end in the wrap or perhaps the "terminator" from the foil at The bottom on the strip close to the outer jacket is often hard to see and to find. If you will find this "terminator," you may nick it with a little Minimize with a knife and peel https://docs.google.com/forms/d/e/1FAIpQLScnzxOoMLi_mVKDfID5ub3SyrgFipQyMy-aEGgORkc-xSZdNQ/viewform?usp=dialog