Are you checking this by raising the car with the tires touching the ground? This could cause erroneous readings. My racecar was toeing out 1/4" per inch of jounce. The way to fix this is to shim the steering box to raise or lower the pitman arm to adjust the driver's side, and to slot the idler arm bolt hole or holes to raise or lower it. You put a washer under the bolt or nut, and weld it in place when you're done adjusting to lock it in place.