I picked up a used official gamecube controller. Everything does work but I'm not really getting that tactile "click" at the end of pulling the right bumper. It does still seem to work fine, just no click. The left bumper clicks just fine at the end of the pull. I found if I put my finger on the bottom edge instead of the middle I will get some click. I took the controller apart but could not figure out what is supplying that little click. Cleaned it all up and put it back together. It looks nice and clean and everything works but still no right click. What gives you the tactile click and how can I fix it?