"If you find anything to read on this or along this line I would appreciate it."
Have you read Blaine Bettinger's blog? http://www.thegeneticgenealogist.com/
If you scroll a little more than 3/4 of the way down the page to the topic below, he discuses this issue.
"Problems with AncestryDNA’s Genetic Ethnicity Prediction?"
June 19th, 2012