Dedham is where I go for any service, and they are great. Remember that like any tech device it may take a while to master all the options and functions. It took me about a year before I could quickly find everything in the Model S I have . The service people may not be driving that 600 mi trip or the daily commute as often as owners. That's why I always go to the forums re Tesla first. I also tell any new owners the same.