My brand new track saw works great except that I need to have a near death-grip on the trigger to keep the motor from turning off during a cut. I'm trying to stay relaxed and gently push the saw along the track, but I have to squeeze the trigger so hard I'm afraid I'm going exert excessive lateral forces that distort the cut. Is this sensitivity normal? Can I adjust it to be less sensitive? Should I take it back to the store? Thanks for your help.