I had a limited run of the gaskets made up last year and have a couple sets still available. These are made of a cork and rubber composite material and is slightly thicker than the originals.
The reason that I made them up was we were getting request for them and a correct Max Wedge gasket as well. If you find a set of original gaskets, many of them have shrunk up over time and will no longer seal properly
If more information is needed, drop me a message.