On a few occasions, the board turned at an awkward angle so selecting a direction on the d - pad would not register. (gamewatcher.com)
The calibration becomes apparent the first time you start one of these attacks while holding your 3DS at an awkward angle, which you must then pivot around for the subsequent sequence. (danielprimed.com)
To be honest, encouraging people to carry big tablets at awkward angles, with a camera weight on the back, is just asking for trouble. (pocket-lint.com)