I recently acquired a Shinobi board looks all original but having a few strange issues. For some reason the right and left inputs are not registering on both the P1 and P2 pinouts but all other controls work. The only other hiccup is the dip switches don’t seem to be changing any settings in the game. All other video and sound seems to be working fine. Any ideas on where to even start trouble shooting? I’ve attached a pic (green tape is on to protect stickers while I give it a good cleaning..she looks to be terribly neglected)