when i wrote off my old zed they offered me £9,250 so i declined that offer and they raised it £500 but it took about 2 months longer so wasnt really worth it.
i saw your zed that day and i think it would be a hell of a lot of work to repair mate. not only that but things are never as they were after repairs.
If I were you id take the money and save up a grand or so for a new one. either that or get something different.
anyway neither of you were harmed so thats the main thing, its only metal. (easy to say i know)