I have a CM storm mousepad (was the only oversized option at my local place, seemed similar to a Qck+), and its starting to develop ripples in the center. I've had for a little under a year. Is this common, or is there anything I can do to correct it?

Its not really that bad to where its affecting my aim yet, but I'm sure its going to get worse. Pretty broke right now, don't want to have to replace it, but I'm open to suggestions. Need something

a)durable
b)cloth
c)huge (really low sens)