The slow but steady improvement of Marion Barber continues as the running back works his way back from a strained quadricep. "I noticed again today, he's got a little more juice,'' head coach Wade Phillips said after Wednesday's practice. "It's an injury where you lose strength. It's not an injury where you're going to get injured again, but he lost a little bit of the power in that one leg.'' The numbers: Barber had 32 carries for 203 yards (6....