What a pain!
Since the door frame wasn't square, I had to make some shims from thin plywood I had, and then taper the shims top-to-bottom with my Dremel. Finally got the door hung square in the frame, shimmed and screwed in the "Z-Bar" outer frame, and then had to install the latch/handle mechanism. WELL.....somebody misplaced the template that came with the handle, so I spent about 45 minutes measuring everything and making some sketches. Laid out my own teplate, drilled the holes, and mounted the handle. Then I had to do some "custom fitting" to get the striker plate lined up so the latch would engage it properly, and hold the door tight to the frame.
Finished it off with a new "heavy duty" closer cylinder, and adjusted it so the door closes fast, but then slows down about 1" before it closes so it doesn't slam.
Considering the 8 or so hours I spent a couple of weeks ago trying to get the $$##%%!! thing to fit the door frame, I have about 15 hours invested in getting this thing hung and operating properly.
And one of the main reasons I bought it was it got rave reviews on the Lowe's website, with people saying they had it installed in an hour and a half........