It seems I may have a broken PCB, a number of my keys are not working. Those keys are 6,7,8,9, Y, U. I pulled the switches on all those keys to check for bent pins and even tried fresh switches to see if they were dead switches. I was able to get 9 and U to actuate only part of the time when I pressed firmly down on the switch. This leads me to believe there is an issue with the hot swap? Any advice would be helpful.