I think your right. I always treat the service staff very good, I never give them a hard time, never complain when a part doesn't come in, as long as the car drives nice, when they did my refit a part for my door didn't come in, and the forgot to fix one thing, that was KO, will bring the car back when part comes in, I gave them all mask with Tesla logo on them, sometimes I bring them T-Shirts with Tesla logos, once I brought donuts to them, I was 30 min. early for 8am. and I always bring back there loaner car, washed and very clean with a tire shine. They always take very good care of me. I believe if you treat people nice, it will pay off. I know how it can get, I'm in business also.