Sweeping Warped Spirals around cylinder

Hey everyone,

I'm having trouble with getting this to sweep/boundary boss around the cylinder. Any ideas?

I tried to project a curve onto the cylinder, but I get an error. 

The physical part (images 3, 4, and 5) has these spirals which look slightly warped. 

Video of me rotating the part: Warped Sweeping Spirals - YouTube 

I need to somehow see the "flanges" to be more visible as they reach that vertical support. They warp it seems like, so I'm wondering if I need some guide lines with a boundary boss or boundary sweep or surface boundary boss or sweep.

 

SolidworksModeling And Assemblies