Just had a track stab on my 09 M8 LE...1050 miles on it and was just adjusted couple rides ago. Only got to ride it a couple times this year. AC customer service is terrible. I talked to a guy at customer service in Minnesota about it and he literally laughed at me...yeah he was laughing on the phone. Pissed me off. If they aren't going to cover it under warranty...which is fine...but there is no need to treat their customers like crap. I have talked to a couple guys that raced and still do race for AC and they say they have heard of this happening a lot, especially with these new single ply tracks.