My Dell XPS M140 notebook’s left-click button has seemingly been broken and very sensative to the touch. I used to be able to keep my finger on the left-click button in anticipation of I wanted to click something, but now it takes small to no pressure to really click something. Meanwhile, it seems like under the right-click button there’s something keeping it up slightly in anticipation of I place real pressure on there and want to push down to click something. My left-click button used to be like this. Is there something I can do (like pop something back into place) to fix it without having to send it to Dell? Thanks.