I have a DS4 controller that i have used for about 6 months. But last week the left stick on the controller started doing something weird. When i was holding the stick straight the character in the game stoped moving and began turning every couple of seconds, even though i was holding it sthraight forward. This happens in every game. I have tried cleaning the stick from the outside with alcohol and i have even opened it and cleaned it from the inside, but nothing helped. Do you guys know a fix for this or should i just buy a new one. The warranty has ended on the controller.