The first six weeks of Ohio State's football season went as smoothly as anyone could have imagined. The offense is rolling and the defense bears little resemblance, except in personnel, to the one that was a sieve last year. But the off week before Friday night's game against Northwestern gave coaches and players a chance to take a step back. Their conclusion: The No. 4 Buckeyes (6-0) aren't quite as flawless as the results would indicate. Coaches took time during the past week to evaluate tendencies and work on fundamentals...