Good news and Bad news. I've discovered the source of the noise. Please see the thread at
http://www.ford-trucks.com/forums/52...-06-psd-2.htlm
It appears, 06- 6.0 liter engines produced during a brief pieriod, all have this problem, which is a noisy HPOP. Ford appears to be taking the, its normal approach, because of the obvious expense to them to correct the problem. I plan to return to the dealer armed with this information. Keep you posted.