I can see the crack in the neck. The hose stops short of where the crack continues and I am not sure if an epoxy will stop it. No way to wrap around that portion of the neck. I don't think I have a metal reinforcement because I didn't see one when I had the hose off. Also, I am leaking around the plastic piece that enters the top of the radiator tank. This plastic piece connects the overflow hose to the overflow tank. Is this piece removeable? Does it have an O-Ring or something to keep a tight seal?