ORCHARD PARK, N.Y. — A lack of consistency has raised questions as to how ready the Buffalo Bills are a little more than two weeks before the start of the season.

“We’ve got plenty to work on,” coach Chan Gailey said. “We don’t need to cancel any practices.”

Gailey hasn’t let his players off easy this week, especially with the starters set to get their most playing time of the preseason on Saturday when the Bills (No. 19 in the AP Pro32) host the Pittsburgh Steelers (No. 7). It’s the third preseason game, and one in which the starting units will have one last chance to work out the numerous kinks that have hampered them in two losses.

“We need to get better. We want to see improvement,” said Gailey, who traditionally rests his starters in the fourth preseason game. “I don’t know what that will show. It should show more production, but we have to get better.”

His message applies to both sides of the ball.

The Ryan Fitzpatrick-led offense has lacked both finish and efficiency.

In seven possessions through two games, the Bills’ starting offense has totaled just 113 net yards, five first downs, a touchdown and a field goal. The running game has been anemic, having combined for 24 net yards.

“This is the last big one for the starters to go out there and get everything fine-tuned before it counts,” Fitzpatrick said. “This one, I would say, is important to us to get out there and play well.”

The production’s been little better on a retooled Mario Williams-led defense that’s shown glimpses of its pass-rushing potential, but has also been giving up big plays.