Through the first two games of the season, it's as if 49ers running back Frank Gore has been running into brick walls.He's carried the ball 30 times for 60 yards. Those are horrible numbers for a back who's averaged 4.6 yards per carry in his nine-year career, with six seasons of 1,000 or more yards on the ground.In a nationally televised Sunday night loss in Seattle, Gore ran the ball nine times for just 16 yards.The 49ers running game with Gore – the team's bedrock the past two seasons under head coach Jim Harbaugh – has been stuffed. Only quarterback Colin Kaepernick has had success carrying the ball, on scrambles and designed plays.After averaging 5.1 yards per carry last season as a team, the Niners are picking up just 3.5 yards this season.Gore says that has to change, beginning this Sunday against the Indianapolis Colts at Candlestick Park."We have to get better in the running game," Gore told Bill Williamson of ESPN.com. "We have to get it done. There are a lot of teams playing us (tough). We still have to find a way to get it done."The Niners' offensive line, graded as one of the best in the NFL last season, had a rough night against Seattle's defense, which...