Recalibrate practice bot stilts

Change-Id: I9a0ff9452f9fca2d8780238b3422f746c4f51016
diff --git a/y2019/constants.cc b/y2019/constants.cc
index fc947fe..5d49587 100644
--- a/y2019/constants.cc
+++ b/y2019/constants.cc
@@ -202,8 +202,8 @@
       wrist_params->zeroing_constants.measured_absolute_position = 0.192576;
       wrist->potentiometer_offset = -4.200894 - 0.187134;
 
-      stilts_params->zeroing_constants.measured_absolute_position = 0.043580;
-      stilts->potentiometer_offset = -0.093820 + 0.0124 - 0.008334 + 0.004507;
+      stilts_params->zeroing_constants.measured_absolute_position = 0.052049;
+      stilts->potentiometer_offset = -0.093820 + 0.0124 - 0.008334 + 0.004507 - 0.007973;
 
       FillCameraPoses(vision::PracticeBotTeensyId(), &r->cameras);
       break;