Pin 20 grounded was the problem. I had wired it to a switch on my stick that I thought was a momentary contact but turned out to be a toggle. I had never tested the flip/flop feature. Clipped the wire where they connected and problem fixed. Now that you are on a roll I have one more issue. When I try to upgrade the firmware all the lights across the top of the panel flash at once at about a one second frequency. instructions say the lights should flash from left to right showing the progress of the update. I reformatted the SD card twice. Any suggestions?
Thanks everyone for you input.