The Ravens could be on the verge of solving a problem that has hampered them for years. In the past two games against the Chicago Bears and Cleveland Browns, the Ravens have collected eight sacks, 16 quarterback pressures and seven quarterback hits. With six games remaining in the regular season, there is still a major question. Is this an aberration? The Ravens (8-3) should be able to get decent pressure on the immobile one, 39-year-old quarterback Ben Roethlisberger, on Sunday when they face the Pittsburgh Steelers (5-5-1), but it’s hard to sack Roethlisberger because he gets rid of the ball so quickly. The Ravens are also coming off two wins over teams with poor offensive tackles.