diff --git a/tests/pre_3_10/test_preproc_recentering.py b/tests/pre_3_10/test_preproc_recentering.py
index d90fdf35..532cbbff 100644
--- a/tests/pre_3_10/test_preproc_recentering.py
+++ b/tests/pre_3_10/test_preproc_recentering.py
@@ -421,14 +421,14 @@ def test_dft(debug=False):
     randay[0] = 0
 
     # ===== odd, subi_size=None
-    size = 21
+    size = 25
     mean = size // 2
     cube = create_cube_with_gauss2d(shape=(n_frames, size, size), mean=mean,
-                                    stddev=3.)
+                                    stddev=4.)
 
     method_args = dict(
         center_fr1=(mean, mean),
-        subi_size=15,
+        subi_size=19,
         negative=False,
         **method_args_additional
     )
@@ -444,13 +444,13 @@ def test_dft(debug=False):
     )
 
     # ===== even, subi_size
-    size = 20
+    size = 26
     mean = size // 2  # - 0.5 # 0-indexed
     cube = create_cube_with_gauss2d(shape=(n_frames, size, size), mean=mean,
-                                    stddev=3.)
+                                    stddev=4.)
 
     method_args = dict(
-        center_fr1=(mean, mean), subi_size=16, negative=False,
+        center_fr1=(mean, mean), subi_size=20, negative=False,
         **method_args_additional
     )
     do_recenter(
@@ -465,7 +465,7 @@ def test_dft(debug=False):
     )
 
     # ===== odd negative (ring), subi_size
-    size = 21
+    size = 25
     mean = size // 2
     cube = create_cube_with_gauss2d_ring(
         shape=(n_frames, size, size), mean=mean, stddev_outer=3, stddev_inner=2
@@ -486,7 +486,7 @@ def test_dft(debug=False):
     )
 
     # ===== even negative (ring), subi_size=None
-    size = 20
+    size = 26
     mean = size // 2  # - 0.5
     cube = create_cube_with_gauss2d_ring(
         shape=(n_frames, size, size), mean=mean, stddev_outer=3, stddev_inner=2
@@ -708,17 +708,14 @@ def test_radon(debug=False):
         cropsize=131,
         satspots_cfg='custom',
         theta_0=52,
-        mask_center=40,
+        mask_center=30,
         verbose=True,
         imlib="opencv",
         hpf=True,
         filter_fwhm=2 * np.mean(fwhm),
     )
     # # first recenter with Radon to make sure it is well recentered
-    try:
-        cube = cube_recenter_radon(cube, **method_args)
-    except:
-        pass
+    cube = cube_recenter_radon(cube, **method_args)
 
     # ===== shift
     shift_magnitude = 2
diff --git a/vip_hci/preproc/badframes.py b/vip_hci/preproc/badframes.py
index 78971dc5..d3a6a011 100644
--- a/vip_hci/preproc/badframes.py
+++ b/vip_hci/preproc/badframes.py
@@ -1,5 +1,4 @@
 #! /usr/bin/env python
-
 """
 Module with functions for outlier frame detection.
 """
@@ -86,8 +85,8 @@ def cube_detect_badfr_pxstats(array, mode='annulus', in_radius=10, width=10,
     if window is None:
         window = n//3
     mean_smooth = pn.Series(mean_values).rolling(window, center=True).mean()
-    mean_smooth = mean_smooth.fillna(method='backfill')
-    mean_smooth = mean_smooth.fillna(method='ffill')
+    mean_smooth = mean_smooth.bfill()  # fillna(method='backfill')
+    mean_smooth = mean_smooth.ffill()  # fillna(method='ffill')
     sigma = np.std(mean_values)
     bad_index_list = []
     good_index_list = []
diff --git a/vip_hci/preproc/recentering.py b/vip_hci/preproc/recentering.py
index 7af5286a..d761f616 100644
--- a/vip_hci/preproc/recentering.py
+++ b/vip_hci/preproc/recentering.py
@@ -866,16 +866,16 @@ def _center_radon(array, cropsize=None, hsize=1., step=0.1,
                                      threshold=False, sigfactor=1, debug=debug,
                                      full_output=True)
             # optimal shift -> optimal position
-            opt_yind = float(fit_res['centroid_y'])
-            opt_xind = float(fit_res['centroid_x'])
+            opt_yind = float(fit_res['centroid_y'].iloc[0])
+            opt_xind = float(fit_res['centroid_x'].iloc[0])
             opt_yshift = -hsize + opt_yind*step
             opt_xshift = -hsize + opt_xind*step
             optimy = ori_cent_y - opt_yshift
             optimx = ori_cent_x - opt_xshift
 
             # find uncertainty on centering
-            unc_y = float(fit_res['fwhm_y'])*step
-            unc_x = float(fit_res['fwhm_x'])*step
+            unc_y = float(fit_res['fwhm_y'].iloc[0])*step
+            unc_x = float(fit_res['fwhm_x'].iloc[0])*step
             dyx = (unc_y, unc_x)  # np.sqrt(unc_y**2 + unc_x**2)
 
         # Replace the position found by Gaussian fit