So I just got my board the other day and I have yet to use it (still factory sealed). It's a K2 Slayblade and is supposed to be a "flatline" board (no sort of camber - just flat). When I first got it and laid it on the ground, it was flat, but now it seems like it's got a rocker style to it. When I put one foot on the board, the other side is noticeable popping up. Is this a big problem?