I went to the dealer service center and after talking to them I decided to wait until my first oil change to due anything about it. With warmer weather the rattle subsided somewhat and now it only shows up under heavier acceleration. I'm at 5500 miles currently and about to put another 600 miles on it this coming weekend. Since the rattle is still evolving and I should be close to 10000 miles service in about 2 months I am waiting until they take the car in then and let them look for the rattle source then.
Thank you for your response. I plan to do the same and address at the 10K service.... if I can tolerate the buzzing for two additional months! Currently at 6800 miles; I am learning to drive around the resonance.
If the wagon is offered in TDI, with 3 pedals, and 4motion my problem will be easily solved!