I made a common mod by replacing c-stick rubber top on n3ds and replace it with psp stick cap. It worked great until today. In calibration screen it can't properly return to center. If I push stick upRight of downLeft long enough, center position is changing, some games are unplayable due to this. I tried to pour drop of alcohol under the stick, but it didn't do anything. And i can't remove that cap cause I superglued it solid. Any advice?