Hi guys. I have a set of stairs that have a 90 degree winder at the bottom, and a 90 degree at the top. There is a straight run of stairs directly bellow this set, making the support difficult. Limited drawings attached. I am having difficulty visualizing the inside connections for the upper winder section. I can not build a platform for the last "square step", and simply stack the winders on top of it because of head room limitations bellow. I have a similar scenario on the lower part, but that seems easier to me so far. Any input would be appreciated.