um.... kinda? i think you can open the animation window thing (not the bottom drawer, the actual animation window), open the head's parameters and find bend. select all the frames (or you might not have to), and then edit the graph. raising the values should do it. (er, unless high bend means a lower head.) i think there's a way to move all the graph control points up and down at once... but i'm afraid i don't remember how. :/