Trouble with angled faces on a cylinear

[JPorathTGC]

I'm trying to make a starter coupler. There are 3 angled faces that need to match the mating piece. The issue I'm having is when I try to taper the faces, no matter what I do they arent flat with the top plane. They taper down like I want but also taper outward. Looking at it from the front you can see that the cut isnt flat relative to the top. Its angled outward which is no good. Any help on how to do this would be greatly appreciated. 

[davebYYPCU]

Can’t open the file at the moment.  A few ways to do it.

Loft a short rectangle, to a Tall rectangle, with circumference as the centre line Rail.

Circular pattern.

Might help....

[jhackney1972]

See it this fits your needs.  If it does and you need help figuring my method from the timeline, let me know.  Model attached.

[jhackney1972 · Accepted solution]

I may have made the teeth too deep.  Here is another model with a shallower depth tooth.  Model attached.

[jhackney1972]

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[JPorathTGC]

I have yet to decide if this will work. It still looks a bit off but that may be an optical illusion. I wont know until the part is machined. 

[TrippyLighting · Accepted solution]

Looks like the two others have beat me to it. I believe this is what you are looking fr:

[djlunty]

@JPorathTGC 

And another version - bit convoluted with the split faces (don't know why the loft leaves a face) and the split and combine bodies to make the pattern of the loft work. 

Doug