Trackpad's "clicker" button worked intermitently. Dragging-and-dropping had begun to feel mostly like just dropping.
The tutorial was great, after reading it I felt confident enough to perform the task blindfolded. Loved all the pictures and markups. The repair went pretty smooth, though some of the suggested tools were wrongly sized. The Philips P00 that was recommended felt over-sized and I believe should have been a P000. I also felt the Y1 recommended was undersized and should have been a Y2.
I got the economy drivers and was unimpressed. While they did work for the job I wouldn't want to use them again for fear of stripping screws. I used the "add tools to cart" feature and missed the premium option. Next time I will get the nicer versions.
Tri-point Y0 Screwdriver
Tri-point Y1 Screwdriver
MacBook Unibody (Model A1278) Trackpad