It took about an hour and a half to install the new shell. For 45 minutes or more he took a screw and tried to thread plastic holes where the screws were supposed to be (they are unthreaded by default). It required some manual work, but it was doable. I could not pay attention to this irritation (although I would very much like to). When I was done I went to controller calibration to test the octagonal gate which was my main reason for buying this product (I tried it myself). in the past with another shell but eventually failed). The upward direction is perfect! However, the right and bottom sides are slightly different, while the left side is slightly larger (to the point where the circle on the gauge is ABOVE the left side line). That might be fine for fighting games, but I wanted to use this product in other games where a little distraction is important (because movement directions are so sensitive on a professional controller). Of this I want to do the following: 1) Keep the bezel intact and know I need to adjust it in three directions. 2) Back to my standard front panel. 3) Sand the corners of this product (which I have failed to do in the past). as already mentioned) 4) Look for another product. 5) Perhaps you are asking for a tested version of this product? Recalibrating the controller using the switch calibration feature does not resolve the issue.