I ran a short flat 1/4 mile track and used a lot of front brake bias. If I remember correctly we ran 60% front brake to 40% rear brake, sometimes more depending on track conditions.
If you have a track bar try taking one round out and see if that improves the car getting in the corners. Also check your spring rates against what the other guys are running. Don't be afraid to ask the "big dogs" ffor help.