Yesterday I decided to take off the speaker grills to do more critical listening to my new M22ti and found one of the woofer has two dents on it, one of them is just a pencil size dot, the other one is more obvious and it extend from the dust cap(pole) toward the rubber surround, it appears that the aluminum cone was once being fold together at the manufactory or something, I'm worry that this long dent would eventually crack, what can I do about this? :-(