Assigning X-arcade Buttons

For those who have an X-arcade they are aware that assigning buttons are actual keystrokes on the keyboard. I have the Solo model and In the situation with Chanka, when I set a button for "Space" (ends up being the top right-most button), when i go for a fierce attack on Marvel Vs. Capcom II for example, the emulator gui responds to that button, opening up the menu and pausing the game. Is there a workaround for this? Any ideas would be helpful thanks. And no, I'm not going to use the button two buttons as attacks, I want to use all of the nicely lined up buttons. :D