At the Apple store, I feel a greater and more positive clicking action anywhere at the front of the trackpad on a couple of the MacBooks on display, compared to my own computer. One of the blue-shirted "specialists" here says my trackpad feels "stuck". I'm thinking more and more that that adjustment screw idea is part of this, except for the hyper-sensitive part of this problem: How can a stuck trackpad also be so sensitive I woke the computer from sleep by sitting down to it and breathing -- blowing gently through my nose! -- on the keyboard? I have a 4:20 appointment with a tech, who will look at this for nothing. I used to work in electronics myself years ago, so I hope to learn this adjustment, if that's all that's needed. (To be continued.)