for Crazy Climber, you need 2 joystciks to play "One for Left Hand, the other Right hand".
Since alot of games were ALTERNATING for player 1 and 2 (pacman,Ms.Pacman,Space Invader etcc), it won't setting up the player 2 controls for the player 2 joystick. Player 2 must use the player 1 joystick. Now in some games like (I think Skyshark) you can set this up because in the game itself you can. In the DIP switch, there is a setting called "Dual Joysticks) something like that intead of Single Joystick. Now id pacman,ms.pacman,space invader etcc...had that option then it would work cause you just set it up for dual joysticks. Hope I made sense...