SAN FRANCISCO (AP) – California regulators are expressing skepticism that Pacific Gas & Electric Corp.’s new leaders have enough professional experience to instill a deep corporate culture of safety. The utility has been blamed for more than a dozen of California’s most destructive wildfires in the last two years. California Public Utilities Commission President Michael Picker said at a meeting Monday that regulators still worry whether PG&E is properly addressing its many problems, including its bankruptcy filing. Consultants hired by the PUC reported last month that PG&E lacks an overall safety strategy, a shortcoming identified two years ago. Veteran PG&E board member Richard Kelly told the PUC he’s confident the new board and incoming chief executive Bill Johnson can change the company’s culture.