Curved Stairs and Wall Extrusion Help

Curved Stair Wall Help.skp (256.4 KB)

Hi guys, I am trying to do a curved stringer on this staircase, and I guess I’m not sure the best way to go about it. I’ve tried making each tread/step a component and creating the guard/railing outline that way, but the result was not smooth enough for what I am going for. I tried truebend, but I couldn’t get the right angles. Lastly, I’ve been trying upright extruder, but I can’t get the inside to extrude without holes. I am attaching the file, any help or advice would be much appreciated!

Try this

Thank you so much this is so helpful