I presently shoot a Reflex Grizzly set at 70# with a 30 in. draw length (i'm 6'4")It averages about 295 fps. I have had shoulder problems in the past, but it just started cropping up again. I really don't want to get a new bow, but when I get back to a certain point on my draw, I can't smoothly pull back anymore. Since I hunt with it, Iobviously cannot jerk it back. My question is: If I change the draw length to 27-29 in., do I need to do much to change my set up?How much estimated fps will I lose at a shorter draw? I have shot a 30 in. draw my whole life and neverhad to change soI don't knowwhat to do.