I currently work for one of the world leaders in CAD engineering company and have an access to all their proprietory software aimed to repairing, validating, etc of STL files. It works drastically better than any of known solutions for me (like netfabb, ms modelrepair, emendo, etc) so if anyone want me to help - just ask me here or in PM.

Indeed, I can't guarantee an immediate result (as I'm doing it in my spare time) but I can assure the result will be amazing ))

.. just my 2 cents to help the 3d printing progress )))