Even though the production has dropped a bit for Pistons center Greg Monroe, coach Lawrence Frank isn't worried. Monroe, who leads the Pistons in scoring and rebounding, went from a bit of an offensive tear to suddenly quieter performances. He went from averaging 25.3 points against Milwaukee, Charlotte and Golden State to averaging 9.25 points against Houston, Minnesota, Memphis and Portland. Monroe also has gotten into early foul trouble lately, and Frank said better positioning could help negate that. In Saturday's 94-91 over the Trail Blazers at the Palace, Monroe had 10 points, eight rebounds and four fouls, the fourth coming late in the game.