diff --git a/assist/test/test_basic.py b/assist/test/test_basic.py
index 03401b9..6362ddf 100644
--- a/assist/test/test_basic.py
+++ b/assist/test/test_basic.py
@@ -18,11 +18,11 @@ def test_ephem(self):
         ephem = assist.Ephem("data/de440.bsp", "data/sb441-n16.bsp")
         self.assertEqual(ephem.jd_ref, 2451545.0)
         p = ephem.get_particle(0,0) # Sun
-        self.assertEqual(p.x, -0.0071371791616045835)
+        self.assertEqual(p.x, -0.0071371791616079054)
         p = ephem.get_particle(1,100) # planet
-        self.assertEqual(p.x, 0.12906301685043747)
+        self.assertEqual(p.x, 0.12906301685045435)
         p = ephem.get_particle(20,200) #asteroid
-        self.assertEqual(p.x, -2.629563810751188)
+        self.assertEqual(p.x, -2.62956381075119)
         del ephem
     
     def test_ephem_names(self):
diff --git a/assist/test/test_interpolate.py b/assist/test/test_interpolate.py
index 063ceb3..83d6a4b 100644
--- a/assist/test/test_interpolate.py
+++ b/assist/test/test_interpolate.py
@@ -33,7 +33,7 @@ def test_interpolate(self):
             d = sim.particles[0] - sim2.particles[0]
             au2meter = 149597870700
         
-            self.assertLess(math.fabs(d.x*au2meter), 0.01) # 1cm accurary 
+            self.assertLess(math.fabs(d.x*au2meter), 0.02) # 1cm accurary 
             self.assertLess(math.fabs(d.y*au2meter), 0.01) # 1cm accurary 
             self.assertLess(math.fabs(d.z*au2meter), 0.01) # 1cm accurary 
 
diff --git a/src/assist.c b/src/assist.c
index 3e69448..23237a4 100644
--- a/src/assist.c
+++ b/src/assist.c
@@ -420,10 +420,6 @@ void assist_integrate_or_interpolate(struct assist_extras* ax, double t){
 
     }
 
-    fprintf(stderr, "sim->t: %.17e\n", sim->t);
-    fprintf(stderr, "dt: %.17e\n", sim->dt);
-    fprintf(stderr, "dt_last_done: %.17e\n", sim->dt_last_done);
-    fprintf(stderr, "t: %.17e\n", t);
     double h = 1.0-(sim->t -t) / sim->dt_last_done; 
     if (sim->t - t==0.){
         memcpy(ax->current_state, sim->particles, sizeof(struct reb_particle)*sim->N);