hello, my stair area is 3.40x5.00m, my floor height is 6.00 m, there is a landing at every 1.50m, I couldn't make my 4-arm staircase with 3 landings in total by watching the videos, I created 2 arms and 2 landings, but I got stuck on the overlapping side. I have attached the attachment, I will be happy if you can help, thank you.