The disassembly guide for the right controller (Steps 4 & 5) shows you the rail that is used to connect the controller to the switch. That is where you would need to look for bent pins or broken plastics. This is hard to diagnose remotely without seeing pictures of those pieces on your controller. The left hand side of Step 5-picture 1 shows the ribbon cable that goes to the connector that interfaces with the switch. The little pins that are embedded in the little plastic protrusion on the very left of the picture is how it plugs into the switch and would be the place to inspect. See the picture below:
[image|3521013]