Fitech and throttle cable question

Has anyone succesfully used the large 1/2" throttle cable position on their Fitech throttle body with a stock cable? I originally hooked the throttle cable for my early A Body to the lower hole but the throttle pedal is stiff. When I move the cable to the top hole with an aluminum bushing for a Holley carb I cannot get full throttle opening but the pedal stiffness is releived. It seems that the Fitech throttle travel is greater than the full travel of an early A Body cable in that position. I thought I'd ask before I try a half a dozen of my futile ideas like I usually do :-)