The right bumper button on my switch deck stopped working after the deck was accidentally dropped from 5ft. When I got to this step of the instructions, I was able to see that the momentary switch that the button triggers had been bent backwards from the impact, making it difficult for the button to trigger the switch. I bent the switch back to its original position, which fixed the mechanical problem. Unfortunately the solder joints for the switch cracked when I pressed the switch forward. I re-flowed the solder joints with a tiny Weber iron that I filed down to a narrow point. The button works properly now.