After watching the 49ers offense bog down in successive losses to the Seahawks and Colts, head coach Jim Harbaugh said there was no single factor responsible."I'm not going to put it on one spot," Harbaugh told reporters. "Precision offensively needs to improve. We'll all have a hand in working on improving that."Though San Francisco rebounded with a 35-11 victory over the Rams Thursday night – rushing for 219 yards – the team's overall offensive stats indicate the 49ers need to improve dramatically to achieve that "precision" Harbaugh is seeking. Even against the Rams, the 49ers converted only 6-of-14 third downs and committed 10 penalties.And, for the season, the Niners have converted only 37 percent of third-down plays (21-of-57), have given up 12 sacks, are losing the time-of-possession battle vs. opponents (30:42-29:18) and are minus-4 in turnover ratio.Those are uncharacteristic numbers for the 49ers since Harbaugh took command for the 2011 season. But perhaps the biggest red flag has been this: according to ESPN.com's Mike Sando, the 49ers have gone three-and-out on 43.1 percent of their offensive series, the fourth-worst percentage in the NFL.The 49ers'...