Hey! i am working on a Taito Under Fire arcade machine where everything seems to work except the second player gun, i have tried swapping the connecters on the board and this fixes the issue but makes the first player gun not work which tells me that its probably a board level issue and the controller itself is working fine? i tried finding out what parts could be causing such issues on this board but had little success so far. I have taken some measurements at the connector on the board but it seems like both ports are getting the same measurements on each of their pins when i compare player 1 and player 2, the cables also seem all fine on the board.. this had made me a little lost on where to check next since i cant find a good pcb plan online so far.. if someone has any idea what component to check or in what area it could be worth to check i would appreciate help a lot! my knowledge on arcades and crt is still very small sadly..