Comments specifically on the drop shaping please!
Again, this shape comes from the force in the middle car: the middle seat is at roughly 0g as it passes the end of the cat walk, then stays at 0g until the pull up. Looks like it gets to about 85 degrees just judging by eye (haven't actually measured it lol).
Problems/suggestions from the keen-eyed amongst you welcomed! (i.e. if it looks cack to you, pls tell!)