Odd question - Ascii Flash Clone + Pelican Adapter

I have an ascii flash clone joystick attached to a psx pcb. when i run it in windows xp with a pelican converter, it flashes down right inputs randomly (about every 2 seconds). but when i run the same joystik with a 3 in 1 pc joybox it runs fine. does anyone have any experience with an ascii clone and pelican adapter ? maybe its not outputting as much power as the joybox, i have no clue.