My car is current in the shop for this problem. However, since I called Jag USA, Jag is helping my dealer figure out what the problem is.
The plan is for my dealer to be on the phone with a Tech from Jag, who is going to help find the problem. Jag USA also said that if that doesn't work Jag was going to send someone down here to figure it out.
Yesterday, when I dropped my car off, my service advisor did say that now that Jag is involved he can get authorization to try new parts. I believe they can only swap parts with Jag's okay.
If they fix my car, I will post what was done.
I would recommend that any owners that have had the current "fix" installed and still have the noise, go to Jag USA web site and click on "Contact Us" at the bottom of the page and request help. If enough owners let Jag USA know DIRECTLY of this problem something might happened. Remember Jaguar thinks the current fix works.