I recently purchased two Aim Trak guns from Ultimarc and have them setup on a test system that will become a fourth arcade cabinet for my office. This will be a light gun only cabinet. I've been able to get every game setup and working superbly except Zombie Raid. Please keep in mind that every other game (light gun and positional games alike) is setup and working properly. I've done the in game light gun calibration multiple times and just can not get the calibration even close. It is accurate at the dead center of the screen but as I move the crosshairs away from center, the game crosshair (visible when you enter your initials) moves away at a logarithmic rate. Does anyone have an idea what the issue may be? I have noticed there is no NVRAM file for it. Is this normal?