Sweeping Triangles

Hey everyone,

I'm currently working on my first autocad project trying to make a bolt with real meassurements. I've done almost everything to complete this project of mine but I have come accross a problem when using the sweep command to make the thread of the bolt. I really don't know what it is I'm doing wrong, and it is not the alignment function that I switch off so the triangle doesn't rotate. I'll add some pictures to explain what happens.

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I set the triangle (not equilateral so it's three lines drawn in that shape) in the position that I want it to be and start the sweep command along the helix drawn. I select all three lines for sweeping and set alignment to "No". This is what happens when the sweeping completes:

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As you can see the sweeping only does half of the triangle, and this is what I don't know how to fix. I do believe it has to do with the base of the triangle being too large, but I haven't been able to fix it even by making it smaller. The code says:

Modeling Operation Error:
                The helical sweep results in a self-intersecting body.
Unable to sweep 2 selected objects.

Any help on how to fix this issue?

Thanks in advance.

I'll add the .dwg file if anyone wants to take a closer look at it.

Image may be NSFW.
Clik here to view.Image may be NSFW.
Clik here to view.Image may be NSFW.
Clik here to view.Image may be NSFW.
Clik here to view.Image may be NSFW.
Clik here to view.

Image may be NSFW.
Clik here to view.