i recently got a new bike and here is the only problem ive been having so far......

when i go into a sprint or am out of the saddle while climbing the back wheel starts coming off of the ground with my pedel strokes. i am assuming it has something to do with my positioning but dont know how to correct it. i also am someone who tends to pull up on my strokes more when i am standing soi know there is more of me pulling the bike forward with my strokes.

i didnt have this problem with my cannondale r400. the new bike is a scott cr1 team.

opinions?