First thing that comes to mind are:
- position of dxf in file vs KiCAD coordinates
- DXF file compatibility
After import and saving of the footprint file, check it's content with a text editor. Might be something in there..
PS: google comes up with this drawing.. only missing the diameter of the pins for the PTHs for the vertical versions.
IMHO, with such a bleak reference source situation I'd get the real part, a caliper and measure it myself. I mean, if the dimensions from the DXF or drawing from somewhere on the internet are off, how much time (and money) do you loose if stuff is wrong and wont fit properly?
PPS:, if you can, add stitching vias around the PTHs for current carrying capacity.
Interesting that I find exhaustive drawings for EC connectors, but not for the XT ones.. I'm keen to get both versions just to make the footsprints/step models actually and as something to look at for reference (have got EC2/3/5 in lots here as I like their spring mechanism better).. but don't hold your breath, ebay/ali turn-around time is 3+ weeks in my neck of the woods.