Hi Hot Flash. I have a tartan 34. I too love t he cork. It seems that many people do also. The cork question comes up a lot. I dont have an answer for you though.
There is
http://tartan34classic.org/ and another site or two where mostly Tartan 34 are discussed. The cork issue has been posted there somewhere. The site has changed from a different but very similar address.
Some day I hope to redo the cork too.
I have seen many different cork type products at boat shows. Some might work well for our boats.
If you end up finding a source let me know.