Cura not allowing full print area to used
Cura is likely factoring in your skirt. Change the skirt lines to 0 and you might be able to print. Cura also seems to have an in-built build size offset of about 2mm. I can't seem to get rid of it in any way other than to change the build size.
Expert > Switch to full settings, then click the options button next to "platform adhesion type."
Click the button next to the dropdown. You will find options for the skirt there. A skirt is not counted as a "platform adhesion type," apparently.
@Kevin: What do you mean by "in-built build size offset"? Does Cura change the size of a print? Or the position?