With all the comments about old key new key what is the difference, if someone put their key on a key-chain with 10 lbs. of keys and do-dads on it, the tumbler will still fail over time. I mean I know what their thought process was, engineers being what they are, looking at everything a certain way. (not always a bad thing) I mean people will do what they want no matter what logic or commonsense dictates what they are supposed to do.
I don't like the new key, but my car is still the same and I drive my car not the key, and I bought the car because of the car not the keys!