I have been to Machado's several times to offer solutions to problems with my aging Chevrolet. As such, they always get stuck with the toughest problems. These guys have always given me the benefit of honest and THOROUGH analysis in a reasonable amount of time and for a reasonable price. I have begun to believe they really enjoy difficult problems. In any event, I have always appreciated the results of their investigations. Their work is top notch and they have never pressured me to go with a solution that might not be appropriate for the stage of life of my vehicle. Kudos to these guys!