Edelbrock 1406 Question

Just bought a used 1406, and during the rebuild i noticed one of the two ideal mix screws goes much further in than the other. There is no damage to the threads and it does not make a difference which ideal screw i try. should they both bottom out about the same? There is almost an 1/4 inch difference in the bottom out point. I have always had Holley's so i don't know if this is normal.