Lofty Walrus

I just received a Stelladaptor to use with MacMame. I am not able to get it to work. It recognizes up/down but not right/left. I'm using it with a known good Wico Redball joystick and the USB cable that came with the Stelladaptor plugged into the front port on my Mac. I've checked it with Appple's Joystick and Gamepad Tester and it appears to be working correctly. In MacMame the response when I configure MAME Digital Joystick 1 is: (Up) Stelladaptor 2600-to-USB Interface:#(V:1240, P:48879, U:1:48)# (Down) Stelladaptor 2600-to-USB Interface:#(V:1240, P:48879, U:1:48)# (Left) Stelladaptor 2600-to-USB Interface:#(V:1240, P:48879, U:1:49)# (Right) Stelladaptor 2600-to-USB Interface:#(V:1240, P:48879, U:1:49)# And for the Button1: Stelladaptor 2600-to-USB Interface:#(V:1240, P:48879, U:9: I'm using MacMame version 0.87b. I have a PowerMac dual 2.0 GHz running Mac OS X 10.3.4. The Stelladaptor seems to work fine with other programs such as Toppler and SuperTux. The directions work with Freedroid but the fire button shoots when it should turn the droid red. How can I get the Stelladaptor to work properly with MacMame? Thanks for your help.