I would think Kawasaki would be eager to get you a new tank and put this matter to rest. They admitted the issue was there fault and fixed it under warranty. I am surprised they are not worried about a lawsuit. It never ceases to amaze me how little dealers of any kind do for customers. Especially in this instance were , there was an accident. If I was the dealer I would be getting you a new tank at my cost, for nothing other than goodwill for a guy who just bought two brand new motorcycles from me. Glad your wife was not seriously hurt.