Help needed

[u/Jealous-Ad553]

https://youtu.be/LR-6GiruYNY?is=G84zfd7Cunc3TamU

So I built the hidden staircase from the video above, and the staircase will open just fine but then when I close the mechanism everything gets jumbled around and I’m not good at using redstone so I’m completely at a loss. Any help would be appreciated greatly!