We've had this issue for months but since we're quite far from the nearest Apple store for another three months I haven't felt like there's much to be done. To be clear, this MBP is around 1.5y old and has the big glass trackpad with integrated 'click' button on the bottom third of it. The button hasn't worked in 7-8 months. The 'tap to click' works, and that's how we use it, but since I don't use it every day (it's basically my wife's) it really annoys me when I do use it. Should I assume this is a hardware issue that can only be fixed by replacement? We don't have AppleCare. Is the trackpad one part that can be replaced or...? Any input would be appreciated.