Can I repair a cake tin which has started to leak? I have a cake tin (the sprung false bottom type) which, although the bottom seems to fit quite well, has started to leak when I pour cake mixture into it.

Is there anything I can do to rescue the tin and stop it from leaking, or should I just bin it and get a new one?
Wrap the bottom in tin foil before squeezing it into the sides with the clasp.