Greetings fellow modellers!

First post here so not sure if this thread is at the right place. Anyways... I got a problem. I'm supposed to model this building but it has to match EXACTLY with the picture and having raged over it for the past week i'm finally giving in and seeking for help.

So my problem is as following: every platform and stairs are matching the picture except for the stairs downstairs as seen in pic 3. So does anyone know a solution to this or want to help me fix this?

Thanks in advance!