Adding Draft to a Arch Shape Feature

Hi, I am relatively new to Solidworks and have come across a draft issue. I took a Solidworks Essentials Training Course, and adding draft to objects was covered, but that was using "flat" planes...The part I am working on is an arched shape, and I cannot figure out how to add draft.

I thought of just adding the draft as part of the sketch, and sweeping the profile along the arch path, but the sketch profile actually gets wider towards the base of the part.

If anyone can help point me in the right direction that would be much appreciated. Just to clarify, I am trying to add 5 degrees of draft to the "Intermeidate Rib" so it can come out of the mold.

Thank you very much.

SolidworksParts And Features