I have used the blessed SVN export as a base, but it still contained numerous errors which I had to fix (some missing files, CR/LF mistakes *including* in binary files).
It would be nice if you could report any such errors you find. Which missing files, for example?
CR/LF mistakes might be due to the lack of a svn:eol-style (or svn:content-type, int the case of binaries) property. All files are stored as BLOBs in the repository, but can get CR/LF converted upon checkout. Please indicate the files and I'll add the properties.