@nscheval
When you have symmetry in a design you should always make use of the symmetry about the Origin.

All of your sketches should be fully defined (see lock symbol on Sketch4 and 12. Blue lines should keep you awake at night. (I couldn't sleep all night thinking about how to solve these issues.) Because your sketches are not fully defined you have crooked lines in your geometry that I don't think you intended.
Only 3 simple sketches are needed for this design (actually only 2, but a 3rd sketch (my Sketch2) will make it easier to edit).
Back in a bit with my revised technique and instructions.