I am afraid I may not have better information.
What I know, for the most part, about these tapes can be found here:
On 2012-02-16 3:29 PM, Scott D. Smith wrote:
> Sound like a batch of tapes with slurry issues. I have run across this
> one a few occasions. Usually the shedding has been pretty light, with
> most of the oxide coming from the edges.
> I've never experienced flaking with these tapes, though-just some
> light shedding. Richard Hess will probably have some better info.
Richard L. Hess email: [log in to unmask]
Aurora, Ontario, Canada (905) 713 6733 1-877-TAPE-FIX
Quality tape transfers -- even from hard-to-play tapes.