I think maybe you need to qualify your post Dana, there's like 6 people that know what your looking for at this point.
The rest are just flexing thier unwanted Traks and thinking "
Yep, this feels like its really stiff, I bet this is what he wants. "
To everyone reading this;
Dana is looking for a specific disc that Vibram made one time last year.
Super Firm was an extremely stiff rubber, kind of like KC Pro, only in rubber, not plastic.
There was only around 30 Traks run. Steve offered them one time, at the Vibram Open last year. They were not available in stores. The material wreaked havoc on the machines at the factory, so Steve said its doubtful they will ever be made again.
All Super Firm discs were hot stamped, on the front, with this logo.
If your disc does not have this stamp, its not Super Firm.
Dana, I'm sure, because of your team relationship, that you asked Steve already.
Prime or Sun King might have one, they both had SF discs on Ebay.
Ray might have one, you could ask him on the other forum.
As a last resort, you might look back through this thread, and its sister thread on the other forum, and see if anyone posted that they got one of these from the Open last year.
I hope you find one.