Help with Mezzo Utopia

I just picked up a pair of Mezzo Utopia speakers at an incredible price. They were very dirty and took several hours to clean up but once done they are in very good shape. All the drivers function but the foam surrounds on the tweeters are very deteriorated. I have looked all over the internet and even called a Focal dealer to try and find out what the number of that tweeter is and if a replacement diaphram is available. Does anyone in the Agon community know what are the focal numbers for these tweeters and their diaphrams. Thank you all in advance