My cordless logitech mouse, which I love dearly, has started to double click accidently when it should only be single clicking. I would say it happens 1 in 4 times. I believe it is a hardware problem, when I take apart the mouse and use only the top part without the bottom half (which contains the mouse ball, etc) the double click problem seems to dissapear. I can't find anything that's pushing on it when the lower half is attached. Any ideas? I want my mouse back 