Pantone, CMYK, RGB and Hex differences in Xara Designer Pro X

[Ander]

Hi! New user to Design Pro, i have been testing doing print documents in CMYK format, what i have seen is the color of black and grey when i export to pdf not in right CMYK value, i using Adobe Acrobat Pro to check the documents, in my job on a digital printshop we prepress and convert pdf to cmyk from our clients when we print. Problem here is that black and grey is build of all four colors an not in only black.
Our machine are counting click and costs more to print in color, when it is a document that should be in only black.
I test and make my own color of black and grey which be correct in export.
It would be nice if you could make your own color palette in CMYK and save that, but can't find that, the default looks to be in HSV, see picture
Black_Grey_test.pdfBlack_Grey_test.xar