Bob Kuykendall, owner of HP-Aircraft LLC in Arnold, CA, works in the Bay Area during the week. He has good skills in both sheet metal and composites, and is an EAA Tech Counselor. He helped me build my RV-8.
He has often expressed interest in helping RV folks build or repair during weekday evenings. Hayward might be a bit of a slog in traffic for him from Mountain View, but you should talk to him.
Email him at firstname.lastname@example.org