Last month, as center Damian Jones exceeded expectations in the Warriors’ starting lineup, head coach Steve Kerr knew that growing pains loomed. After two seasons Jones, 23, was still learning all that the NBA demands. A few impressive performances against elite big men in October overshadowed the fact that he had yet to master such basics as boxing out or staying out of foul trouble. Less than a fourth of the way through his first full-time NBA season, the 7-foot, 245-pound Jones is struggling to capitalize on his immense tools. With Stephen Curry and Draymond Green out with injuries, he has been inconsistent, forcing Kerr to tinker with his center rotation. After starting the first 16 games of the season, Jones came off the bench in recent losses to Dallas and San Antonio. In Wednesday’s game against Oklahoma City, Kerr shuffled him back into the starting lineup to match up with the 7-foot, 265-pound Steven Adams, only for Jones to get bullied on both sides of the court.