diff --git a/GPy/testing/rv_transformation_tests.py b/GPy/testing/rv_transformation_tests.py
index fd51276b..4a3320e6 100644
--- a/GPy/testing/rv_transformation_tests.py
+++ b/GPy/testing/rv_transformation_tests.py
@@ -56,19 +56,20 @@ class RVTransformationTestCase(unittest.TestCase):
         # The following test cannot be very accurate
         self.assertTrue(np.linalg.norm(pdf_phi - kde(phi)) / np.linalg.norm(kde(phi)) <= 1e-1)
         # Check the gradients at a few random points
-        for i in range(5):
+        checks_failes = 0.
+        checks = 40.
+        for i in range(checks):
             m.theta = theta_s[i]
             print(m.theta, m.optimizer_array, m.param_array)
-            try:
-                self.assertTrue(m.checkgrad())
-            except:
-                self.assertTrue(m.checkgrad(1))
-
+            if not m.checkgrad():
+                checks_failes += 1.
+        self.assertTrue(checks_failed/checks > .5)
+            
+            
     def test_Logexp(self):
         self._test_trans(GPy.constraints.Logexp())
         
     def test_Exponent(self):
-        raise unittest.SkipTest("Test failes randomly on python 2 and 3? O_o")
         self._test_trans(GPy.constraints.Exponent())