A tricky circuitry problem returned on my Dodge Caravan after we believed it was fixed. Of course, when I took it in the second time, the problem decided not to reoccur for the folks at Winkler. Instead of just giving it back to me until it happened again, they redid the work from the previous week at no charge. So far, so good. George, D.J. and Dave are top notch people and work hard to keep Winkler the epitome of auto service excellance in Gaithersburg.