I'm not sure about customer service, but I just used my first set of Autometer gauges recently. I added a few gauges to the boat that already had a full set of Autometers. I have to say that I was less than impressed. Neither one of the boost gauges would return to zero.One stayed in boost and one in vacuum. They just felt very light and kind of cheap. Now I have had problems with other gauges as well, so maybe this was an isolated incident. Like I said, I only used them one time, so who knows, maybe that is not the norm. I hate to base my opinion on one time, but that is all I have to go from. I think I will stick with Livorsi.