Hey, I've changed all the D stats (FG attempts & made, minutes, rebounds) in players.dbf, but everything remains the same

When I simulate 2 months in a season all the teams have their starters with 34 min/game and the bench with 10 min/game. This is no realistic any way...
I did what Andy said but I don't see a change. I reduced minutes, FG attempts and mades (in the same proportion, I mean, scaled) for starters and then rised up those for good bench players.
Can you help? Andy, sure that's the way for rising stats of bench?