i have a kind of fresh solution. I tried the groovy looking Rovner Platinum Alto (as in Alto Sax) mouthpiece on my clarinet and it works a merveille! Then, at least, I don't think the ligature was being made for clarinet--but who cares. The only concern might be that the steel strapping might mar the clarinet mouthpiece more than a soft Rovner, but that's true of alto and tenor, too. So don't fret. Try it. You'll like it! And I'm thinking that one could also glue a piece of fine leather under the horizontal straps, which might make the fit even better. But for now, i suggest you cold-turkey it. As is. Good luck, my friend.