A search has been under way since early Sunday evening for a Camptonville man missing in the Poker Flat area, said Sierra County Sheriff John Evans.Jim Macklin, 64, left his wife with their disabled vehicle at about noon in order to get help."That's the last I saw of him," said Linda Macklin.The Macklins left their home near Bullards Bar Reservoir on their way to Poker Flat Sunday and made it to the Saddleback lookout, Linda Macklin said. They turned back at Canyon Creek, she said, because Jim Macklin didn't feel safe driving their all-wheel-drive Honda Element across.The Element got stuck …