While I am happy still occurs Logitech trackballs, which are much more comfortable than a normal mouse, they are still perpetuating the errors in the newer versions do not exist in the original marble and Trackman Wheel versions. First, the buttons are at a standstill excessively close together. While I put my hand on Trackman Marble old, my hand rests contentedly on the fingers on the buttons with a spread near 3.5 to 4 inches. Good and relaxed. The buttons are straight below my fingers. With the most recent version of the track ball and at a standstill the new M570, the spacing is too close button to the right is NOT my finger on the button. I have to strain to the left to right click. This is extremely aggravating. Please help me someone for this.
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