Hello, I have a ultimarc ultimate IO and I am having trouble getting player 3 and 4 to work. When I try to configure the joysticks and buttons 3&4 are unresponsive. Player 1 and 2 work. I have it wired right on the 3 and 4 spots on the IO. The IO board is set in X-input mode not keyboard mode. I have wired ground with the daisy chain for the player 1 and 2 buttons and joysticks. Does ground need to be different for player 3 and 4? I am using Batocera and when I try to configure them nothing happens. They could be working and it is a Batocera issue, I reall have no way else to test them. What could be wrong? Thanks again for all the help!!