I have an Nikon D7000 and 18-105 mm kit lens. I spilled some tea on the lens (not related) so I ended up at a local Nikon certified repair shop we have in town here. Lens was kinda a lost cause (going back to Nikon) but while there I asked for a quote on sensor cleaning and if anything could be up with the camera. So they told me the camera needs "adjustments like all D7000s" and which I inquired what they meant, and was told calibration of the AF, tuning, the cleaning, and a "firmware upgrade" (which I already did myself...). And they quoted me $180 and a week, now I told them I'll be back later maybe.
Would this be worth it? As far as I can tell my D7k with a good lens seems to work fine. Has anyways gone though this, or do regular service to there camera besides sensor cleaning?