Sitting on my new road bike (Giant SCR2), it feels like all of my weight is being pressed down onto my hands and the bars. I know you're supposed to be able to have a light grip on the bars, but I feel weighted-down onto them which is going to give me sore hands and arms very quickly. What's the solution ? Should I drop the seatpost a smidge and maybe slide the saddle forward on the post ? Or is it just the newness of the bent-over position and the fact that I need time for my arm muscles to adjust ?