Just thinking of lowering my draw weight from 68.5 to 65. It’s a Mathews vxr and was just curious what changes I may see. Would I need to change arrows? Currently shooting 340’s would I need to drop to a 400 spine? I’m guessing 65 is still plenty for elk and deer. Reason I am thinking of lowering draw weight is I’m struggling to keep stamina during shooting and seems the more weight I draw I have a little bit of a dull shoulder pain that isn’t always present while shooting but after shooting.