Hiljack

For some reason I can’t get my right side cannons on my schooner to load, the left side works fine. I have them manned ammo in ammo box but they will not load nor can I get the gun ports to open with the command. Left side works fine cannons load gun ports will open. I have replaced the cannons, gun ports taken the box on and back off the cannons even destroyed and put in a new deck. With no luck any ideas what’s wrong?