Richard I know exactly what you mean. There are two older guys at our local Napa store, I'll wait in line for them letting other people go ahead to the next available counter person, because they are worth their weight in gold. One guy always chats, takes his time, and will take me in back to look for the right part, versus not taking the time, like the newer guys.
Sorry to hear this news, it's like losing a best friend. We had a local Butcher pass away this year. His name was Merl and he always would give advice when asked about the best way to cook a certain cut of meat, or recommend something based on what you were cooking. When I read his obituary it turned out he was quite famous, had his own radio and tv show. Nice Guy who we miss.