I appreciate the input on this question from those who have made suggestions. As the unofficial "fix" for %post does not change the target build (as the anaconda rpms are untouched) I will move in that direction. Those of you speculating will have to accept that there is much I cannot share and much of which you do not know about the systems and target environment. To suggest a "shaming" only makes the Centos community look bad as it would be done so without understanding the entire environment and situation. Thank you.
Eucke