Brand New board +hairline cracks (Im new and worried please)

Hi, i have just bought my first board, its a 7'3" Circle One board, which cost me £260 and on the second day of using it, I noticed along the stringer ( i think, the piece of wood that runs down the middle) there is a load of hairline cracks.
I have included some pictures (please click to view larger versions)


Running my nail over the cracks, I can feel a deffinate step on some of them, others are under the surface.
Considering its only been used twice, and is 3 days old, should I be worried and should I take it back to the place i bought it? (which unfortunately is about a 2 1/2 hour drive
)
Being completely new to the surfing scene, im not sure whether this happens when its fisrt used or whether this isnt a good sign.
Any help is greatly appreciated
Thanks
Laurie
I could send someone larger pictures via email if this would help
Thank you
laurie
I have included some pictures (please click to view larger versions)




Running my nail over the cracks, I can feel a deffinate step on some of them, others are under the surface.
Considering its only been used twice, and is 3 days old, should I be worried and should I take it back to the place i bought it? (which unfortunately is about a 2 1/2 hour drive

Being completely new to the surfing scene, im not sure whether this happens when its fisrt used or whether this isnt a good sign.
Any help is greatly appreciated
Thanks
Laurie

I could send someone larger pictures via email if this would help
Thank you
laurie