Felice was a star and a true professional! I called him initially to discuss the problem and he was extremely engaging and took the time to explain things to me. He quoted me £600 plus vat to provide the labour to replace the heater matrix (which I supplied). I dropped the car off on Friday afternoon and it was ready Monday morning for me to collect. They spent Saturday and Sunday working on the car for it to be ready for me. I've asked him about other work on the Mas and he's happy to do it. He is very genuine and seems to have a real passion for Italian cars. He mainly works on Alfas (vintage and new models), but has a few regular Maserati and Ferrari clients. I would definitely use him again for work on my car.
My car is a 2005 4200 and I plan to keep it for as long as possible. I've already done 25K in the three years I've had the car. I'm comfortable using a good indy as opposed to a main dealer. For me it's all about building a relationship with someone who you can trust and provides value for money.
Thanks for the recommendation CatmanV2!!