I'd help you if I could, I bet someone here will come to your aid. What lens is it?
I wouldn't ordinarily reply to this, since I am of no help, but I happened to catch Otis typing out a PM to you and offering his help. He started out by saying that there is nothing he likes better than a big Beer Belly, and since he is German he is in a great position to help you. He goes on to state that you need to supply him with the cash for purchase up front, plus shipping and handling, along with a small "Rodent Tax" he is required to pay under German law. There was more, but I didn't catch it all...something about shipping it by "Squirrel Express" that might take up to 6 months...or more.
Anyhow, just hit the delete if you get the PM in your box. Otis is not German, is not in Germany, and even if he was I wouldn't buy a fire extinguisher from him if my head was on fire.
Regards!