Add constants

- Updated constants to correct values.

Change-Id: I62c7678e638cd0564605bc0824909532fc1bc854
diff --git a/y2017/control_loops/python/hood.py b/y2017/control_loops/python/hood.py
index 376a22a..6ab8072 100755
--- a/y2017/control_loops/python/hood.py
+++ b/y2017/control_loops/python/hood.py
@@ -43,7 +43,7 @@
     # Third axle gear ratio off the motor
     self.G3 = self.G2 * (14.0 / 36.0)
     # The last gear reduction (encoder -> hood angle)
-    self.last_G = (18.0 / 345.0)
+    self.last_G = (20.0 / 345.0)
     # Gear ratio
     self.G = (12.0 / 60.0) * (14.0 / 36.0) * (14.0 / 36.0) * self.last_G