I don't know what to say. I have done that 200 something calibration point process, and I have no problem with my pen when writing and works great on corners. Took time to do the calibration, but the results works. It is also a lot better on corners. The down side, is that for some reason I can't reach the last 5-8 pixels to the right of the screen. but the charm bar still shows. I just can't click on the 'show desktop' button next to the clock. I know how to fix it (add a lot of calibration points on the edge, but as school started, I just don't have the time).
Why did I calibrated the pen?
-> After a while, I figured out what is the position of the hand/pen of the out of the box calibration, but I found that uncomfortable for wright. fine to hitting buttons on a program, but not writhing. So I had to calibrate it. The default 16 point calibration works fine, IF and only if, the hand and pen angle/tilt remains exactly the same, and you do it with extreme (near impossible) precision. If not, you'll have an area where the track won't be good. The 200 something point calibration, allowed me to calibrate the pen like I would have my hand and pen at the are of the screen, allowing me to have the pen act always perfectly on how I would use the pen. It must be noted, that as I calibrated the pen when my Surface Pro 2 is flat on the table. If I put it on it's kick-stand, the calibration is incorrect, as the way I hold the pen is no longer identical, which is normal and expected.
-> I wanted the pen cursor not at the actual tip that touches the screen, but rather sifted to the left by a few pixels, like I would get from a real pen. So when I calibrated my pen, I took this in consideration, where I did a small offset on every target point.