A rаdiоgrаph оf а PA axial prоjection for the intercondylar fossa does not demonstrate the fossa well. It is foreshortened. The following positioning factors were used: patient prone, knee flexed 40° to 45°, CR angled to be perpendicular to the femur, 40-inch SID, and no rotation of the lower limb. On the basis of the factors used, what changes need to be made to produce a more diagnostic image?