I just picked up a D700 and 24-70 online used at a pretty good price, knowing that the lens had some scratches and was not in perfect condition. Everything came in today, and I can clearly see that the glass is fine, no scratches, but the zoom ring is caught, very stiff, and that when focusing the lens, I am not able to move the focus points using the D700 controls. The barrel and base ring are also very loose. Should I try and repair, or just send back and wait till I can afford close to a new one? The D700 is in 'ok' condition, haven't checked the shutter count yet - will do that when I get home. But basically got both of these for the price of a new D700 body. Thoughts?