unearthed a clip of his fight against Valuev, and he is announced as being 17s 3lb (241lb.) Valuev is meanwhile announced as being 21 stone - 294lb, rather than the 320 his boxrec record reports.
So anyway, the link is below if you want to use it and add or ammend, or not.
http://www.youtube.com/watch?v=Osf3fMXJRm8
EDIT: the 21 stone is apparently announced because that's as far as the scales at weigh-in went :P