LOL i was about to point out that the skid2964 has obviously cropped the image to show the text/scale part better, but Marc was actually right and the test was performed incorrectly.
I believe you've tried with few lenses, just to see what's really happening.
Anyway, if you confirm that your camera has front focus, since it's new and you still have your k20d to shoot with, i'd reccomend to send it to Pentax.
If i recall correctly from one of Pentax service manuals they are correcting position (height) and tilt of the
AF sensor. If it is a bit too high or low it should adjust well in debug mode, if it is tilted too much you will get good focus at some distance and bad at others (just a guess).
Update: After seeing your new test the focus seems to be perfectly fine. I have more FF with DA70/2.4 on k200d (around 2 to 6 mm) and it can't be seen in most pictures anyway (still, it's only f/2.4 so the text is in focus along with the 2 and 6mm, just a bit softer) - that is i've never seen it in any other pictures than tests specifically done to show it. Btw, are you taking this at 45 degree angle, because it seems that it is lower than that - it can change the FF/BF reading: