Mike,
My post is only looking at the upper track and the incline from the opening to the upper level.
I loaded this as an image and attempted to mark it up as close to a joint as I can get. The red lines are isolation points, the black X's are drop locations for each block. I don't know any particulars about the opening so I just put a red line down the middle of it.
I also place a TIU label approximately where I think yours is located assuming you will have terminal strips close by. Your runs will be from this area to each black X.
