I am pretty sure I have measured carefully. I measured after cleaning all grease off the mill and the ways. I redid the measurement several times as well as checking the other specs on the test certificate. They were all ok, it was just the XY that was out. The reason I bought the mill was for conversion to cnc. I need the extra movement of the Y axis that this mill offers over the normal Sieg mill. If I was to send it back and get a replacement then I may well get the same problem. From my point of view it is simpler just to get it fixed and know it is accurate.

Interesting issue about the Y axis movement. They advertise it as 130mm. However if I measure the movement from the centre of the table it is 55 mm to one side and 85mm to the other! Strictly speaking I guess that it is only a 110 mm table movement unless I add a 15 mm spacer block to the head, which I could easily do. This would give me 140mm. I could also make an extra aluminium table if I want that would project more to the rear than the front by 15mm. There is room to move it back.

John