I spent the whole day trying to turn the manual release valve into the closed position but it's stuck inside the valve body. I drilled 3 little holes along the valve face (or whatever is left of it)and made a flat **** but even the screwdriver wont make it turn, the valve material is very soft and deforms very easy. There is something I can do to temporarily leave the valve body in closed position? or something that I can apply to make it get lose (I tried a lot of w-40) Please help
