So I got stuck at PE3, I think because I was doing Incline Rows wrong. I was ending up with the straps vertical at the top of the movement, and I felt it only in my rear delts. The way im doing it now, i feel it in my biceps and back, so it should transfer much better to ground rows. I just wanted to make sure this is ok, because the course video was more like I described, but the straps were much longer so its hard to tell. If it is good form, this was a successful 5x15 mastery attempt.