Just bought a D2hs in great shape on ebay. I finally graduated from my D40x, which I have used for the last 3 years with great pleasure. It is now my wife's. I love this camera so far. Its exposure is so much more accurate than my D40x, and I love using the pro body. Any advice from D1/2/3 veterans? Are there any tricks to tracking smaller birds in flight? This has been my biggest challenge so far. Thanks in advance...