Typing, my arms are at a 90 degree angle at my sides. Using the mouse in many positions this is not possible while keeping proper keyboard posture. It is at the most elbow to the front of my chest. Don't worry about this or something to change? I know, Trackball but I need the DPI. I will not use a bouncy keyboard system as I had mentioned here. I use a straight solid platform. I am seated properly and do not see a way around this if it even matters? No injuries ever. I do not mouse or type with my arms,wrists touching anything. I am relaxed and not fatigued. Therefore I did not know if this is something I should correct, if so how?