Recovering from bad dump

I have an svnadmin dump file which is showing checksum errors when I load it
into a new repository on a new server. Unfortunately, I do not have access
any more to the original repository and I need to recover to a new server.
Attempts to recover on a file-by-file basis by hacking the dump file are now
resulting in "File not found" errors.

What I need is something to recover as much as possible from the dump file,
even if it means losing a few files (mainly , I want the text files, and all
the files that are causing the problems are binaries).

Is there any way of fixinf this such as a "--force" option on the load or a
cleanup program that creates a clean dump file?

--
Regards,
Martin
(m.e@acm.org)