I'm not sure what the confusion is about, but I have been flying a DPU for about 2 years w/the pull-pull elevators, as prescribed in the instructions, and they work fine. I am unable to send photos, but the procedure is simple. Merely thread 2 cables from each side of the servo output arm to the top, and bottom of each elevator half. It looks like you have a lot of cable in the kit, but when you finish, you will have less than 6 inches left. ( I.E. from one side of the output arm, thread the cables to both bottom linkages, on each half of the elevator, and on the other side of the output arm, thread both cables to the top of each elevator half).
Hope this helps

Bill