Better tested the fridge, and handled disable.

Change-Id: Icedd5aea0495b2e81e46ed76845fbc95914b2056
diff --git a/frc971/constants.cc b/frc971/constants.cc
index 0f63ed2..b0cbc6b 100644
--- a/frc971/constants.cc
+++ b/frc971/constants.cc
@@ -55,7 +55,7 @@
     kElevatorGearboxOutputPulleyTeeth * kElevatorGearboxOutputPitch /
     (2.0 * M_PI);
 
-const double kMaxAllowedLeftRightArmDifference = 0.01;  // radians
+const double kMaxAllowedLeftRightArmDifference = 0.04;  // radians
 const double kMaxAllowedLeftRightElevatorDifference = 0.01;  // meters
 
 // Gearing ratios of the pots and encoders for the elevator and arm.