Spiral stair help.

Hello,

I am trying to find a quick way of modeling spiral stairs. I tried using the flex option( often all I need the curved stair for is a visual) but the stair twists over at the top. is there a way to keep this level? the image is an assembly that I saved out as a part so I could use the flex feature. Obviously I cant use the wrap feature.

the reason for going down this route is because to model a spiral stair as a spiral etc is very time consuming.

if anyone has other suggestions/ways of doing this I would be grateful.

SolidworksGeneral