Jeff Pestana has a long career as an AMA professional motocross racer. Check out https://racerxonline.com/rider/jeff-pestana/races to review his results. You cant argue with nearly 20 years of National and Supercross results. In addition he was a Honda test rider for several years, helping their top pros work on bike settings.
Jeff has the most experience of any of the motocross coaches in the Northern California Motocross area. His team runs clinics at several tracks around our area and offers both group and private training. I have personally taken clinics from MXClinic and would recommend him to anyone asking.
The best way to reach out to him is via Instagram