I went through the same frustration (received my dk2 last Wednesday the 27th). I finally have everything working, with all aircraft - with exception to multiplayer (waiting for DCS update for that one).
If you haven't got Oculus up and running with DCS, I highly recommend the following (it worked for me):
Visit the Oculus VR forums. There are excellent step-by-step instructions; specifically from a title called: RE: DCS DOES WORK AND ***IS*** AMAZING. by TomSD, on page 13 (of that title).
Several paragraphs on it, but the second paragraph is all you need. Hope this helps.