Gentlemen, I was able to get the clutch TSB done at Wellesley Mazda in Wellesley, MA on my 2006 MazdaSpeed6 with 29k on the odometer. I was denied by two others (Sentry West in Shrewsbury, MA was one of the dealerships that claimed the clutch "felt right"). The other dealership told me "this would be considered a clutch adjustment and you are outside of the 12k warranty".
I consider myself a good consumer advocate, so I chose to go right to the top of Mazda to get this done. I'm not going to discuss who I contacted, and who was involved, because I consider what they did for my a personal favor.
I only chose this route after Sentry West denied me, and also after I griped to Mazda Customer Service, who were also not helpful, and tended to defend the decisions of the dealers. Eventually, I was able to get the RSM to visit Wellesley Mazda and drive my car with me in the passengers seat. After a 15 minute drive, a good conversation, etc. he said "I will authorize this repair for you but I bet you will not be able to tell the difference". He was wrong, I can definitely tell the difference. And so can everyone else who drove the vehicle before and after. It's like night and day folks.
So, fellas, YMMV, but based on my experience, I had to pull out all the stops to get this one done. If you are motivated and professional, you can probably make something happen. I wouldn't expect to get this one paid for without some work, especially if your mileage is somewhat high like mine is.
BTW, I am now at 31.5k on the odometer, and I am still loving the new clutch. The clutch still feels firm and sporty, but now release is higher and less jerky, and clutch pedal effort is much less.
Awesome work... and everyone on here can very well attest to the difference in the clutch feel too... even people who HAVEN'T had it done to their speed6 can feel the difference when they drive mine. If you should ever talk to the RSM again, perhaps you should mention that to him, lol (idhitit)