I rec'd the recall notice for my 2004 MC so I took in the letter when I had my 3,000 mile oil change. They inserted a plastic piece into the keys' slot and a ring for (I guess) attaching any stuff to it (which I don't). I have not had a problem with the ignition but I looked at the fix and thought that this was some engineer's wet dream to correct a probem that exists in the cylinder. Well, I got the letter and let the shop do their work. No real opinions, one way or the other; I was more interested to see that they did the oil change correctly (I check the stick before leaving) and did not put scratches on the car.