Colleague Dan Graziano asked for San Francisco 49ers strengths and weaknesses during our "Road to the Superdome" conversation Wednesday afternoon.I forgot to mention the field-goal kicking situation as a weakness.Justin Tucker vs. David Akers, Wks. 1-20Veteran David Akers sent all five kickoffs for touchbacks during the 49ers' 28-24 playoff victory over Atlanta, his highest single-game percentage since a Week 8 game at Arizona. But San Francisco went without a made field goal for the first time in a game since Jim Harbaugh became coach before the 2011 season.