Where did this line come from in my SU model?

I have an extra 'line' on my sketchup model that I thought was my axis line. It is just about in line with my green axis but is about a degree or two off from it. I tried adjusting my axis but that wasn't it.
Is there a way for me to add my model as an attachment so someone could clear this up for me? I'm sure its something simple for you experienced guys but I just can't seem to delete/adjust it?

Try looking for the 'delete guides' under the edit menu. You can also turn off the axis under the 'scenes' window, and have a clear picture of what may be lingering in the drawing.