i bought this board from a friend of my family. he is a representative of hyper-lite. he sold me the board for $50 because it was used in a demo. i bought the board and the next day. went out and rode it. i then broke my ankle and haven't been able to ride it. its been about 6 months since the last time i rode it. its now formed what seems to be a bubble of air under the center of the bottom graphics plate. when i originally bought the board. this bubble was not there. i don't know what to do or if i can even fix this. i would really appreciate some help on this and will answer all questions as best as i can.