Fix up drivetrain constants

Fixing a bug in If880956affacf585d12f4df799f3c6426cf677f1

Change-Id: Ia019bd0137b311e20b25faebb0167732444b0a47
diff --git a/y2016/control_loops/drivetrain/drivetrain_base.cc b/y2016/control_loops/drivetrain/drivetrain_base.cc
index ae2e62f..1b11690 100644
--- a/y2016/control_loops/drivetrain/drivetrain_base.cc
+++ b/y2016/control_loops/drivetrain/drivetrain_base.cc
@@ -15,7 +15,7 @@
 
 using ::frc971::constants::ShifterHallEffect;
 
-const ShifterHallEffect kThreeStateDriveShifter{0.0, 0.0, 0.0, 0.0, 0.5, 0.5};
+const ShifterHallEffect kThreeStateDriveShifter{0.0, 0.0, 0.0, 0.0, 0.25, 0.75};
 
 const DrivetrainConfig &GetDrivetrainConfig() {
   static DrivetrainConfig kDrivetrainConfig{