you are right with you guess when it comes to the downswing. At the transition I start with the hands and the everything happens itself but I pay no extra attention to getting the hands back to impact position, the only thing I currently "measure" is PP#3.
As I mentioned, if I pay descent attention to my setup with impact fix, and I start from there I start with the hands as well and raise them upto shoulder heigth or so, can state it for sure right now, will ry to tape it over the weekend and then I will have a closer look at it.
Today is my first day without swinging a club, just some putting with the i-ping app and try to correlate the data to the ball length and line.