diff --git a/las_manipulation.py b/las_manipulation.py
index 8b75b74..56ae694 100644
--- a/las_manipulation.py
+++ b/las_manipulation.py
@@ -353,7 +353,7 @@ def polygon_wave_runup(xyz_1m, direction, shp_name, set_check_value, distance_ch
     # Simplify polygon to remove invalid geometry
     #geom = Polygon(for_shape).simplify(10)
     geom = Polygon(for_shape)
-    
+
     # Export polygon as shapefile
     df = gpd.GeoDataFrame(geometry=[geom])
     df.crs = {'init': 'epsg:283{}'.format(zone), 'no_defs': True}
@@ -406,8 +406,8 @@ def process(yaml_file):
     # Interpolate point cloud onto a grid
     print('Interpolating to grid...')
     xyz_name = os.path.join(tmp_dir, las_basename + '.xyz')
-    call_lastools('las2dem', input=las_classified_name, output=xyz_name,
-                  args=['-step', 1], verbose=False)
+    call_lastools('blast2dem', input=las_classified_name, output=xyz_name,
+                  args=['-step', 0.1], verbose=False)
 
     # Make runup clipping mask from gridded point cloud
     print('Calculating runup clipping mask...')
diff --git a/las_outputs.py b/las_outputs.py
index fb62c7a..ad59e53 100644
--- a/las_outputs.py
+++ b/las_outputs.py
@@ -87,14 +87,14 @@ def plot_profiles(profile_name, csv_output_dir, graph_loc, ch_limits, delta_vol,
         fig_h = profiles.dropna().values.max() / m_per_inch * vertical_exag
         fig_w = (profiles.index.max() - ch_min) / m_per_inch
     except ValueError:
-        fig_h = 5
+        fig_h = 2.3
         fig_w = 10
 
     if scale_figures:
         fig, ax = plt.subplots(figsize=(fig_w, fig_h))
         ax.set_aspect(vertical_exag)
     else:
-        fig, ax = plt.subplots(figsize=(10, 5))
+        fig, ax = plt.subplots(figsize=(10, 2.3))
 
 
     for col in profiles.columns:
@@ -190,14 +190,15 @@ def calculate_volumes(profile_name, current_survey_date, previous_survey_date,
     volumes = volumes.sort_index()
     volumes.to_csv(csv_vol)
 
-    # Get most recent volume difference for current profile
-    current_date_idx = volumes.columns.get_loc('Volume_' + current_survey_date)
-    previous_date_idx = volumes.columns.get_loc('Volume_' + previous_survey_date)
 
-    if previous_date_idx < 0:
+
+    if previous_survey_date=="nan":
         # Return None if there is only one survey
         delta_vol = None
     else:
+        # Get most recent volume difference for current profile
+        current_date_idx = volumes.columns.get_loc('Volume_' + current_survey_date)
+        previous_date_idx = volumes.columns.get_loc('Volume_' + previous_survey_date)
         previous_vol = volumes.loc[profile_name][previous_date_idx]
         current_vol = volumes.loc[profile_name][current_date_idx]
         delta_vol = current_vol - previous_vol
@@ -240,18 +241,19 @@ def process(yaml_file):
     crop_swash_poly = os.path.join(shp_swash_dir, las_basename + '.shp')
 
     # Crop point cloud to swash boundary
-    print('Cropping swash...')
-    las_data = call_lastools('lasclip', input=input_las, output='-stdout',
-                             args=['-poly', crop_swash_poly], verbose=False)
+    #print('Cropping swash...')
+    #las_data = call_lastools('lasclip', input=input_las, output='-stdout',
+    #                        args=['-poly', crop_swash_poly], verbose=False)
 
     # Export classified, clipped las for delivery to client
-    las_name = os.path.join(output_las_dir, las_basename + '.las')
-    with open (las_name, 'wb') as f:
-        f.write(las_data)
+    #las_name = os.path.join(output_las_dir, las_basename + '.las')
+    #with open (las_name, 'wb') as f:
+    #    f.write(las_data)
 
     # Apply sea-side clipping polygon
     print('Cropping back of beach...')
-    las_data = call_lastools('lasclip', input=las_data, output='-stdout',
+    #las_data = call_lastools('lasclip', input=las_data, output='-stdout',
+    las_data = call_lastools('lasclip', input=input_las, output='-stdout',
                              args=['-poly', crop_heatmap_poly], verbose=False)
 
 
@@ -263,8 +265,8 @@ def process(yaml_file):
     # Make a raster from point cloud
     print('Creating heat map raster...')
     tif_name = os.path.join(output_tif_dir, las_basename + '.tif')
-    call_lastools('las2dem', input=las_data, output=tif_name,
-                  args=['-step', 1, '-keep_class', 2], verbose=False)
+    call_lastools('blast2dem', input=las_data, output=tif_name,
+                  args=['-step', 0.1, '-keep_class', 2], verbose=False)
     # IF THIS STEP ISN'T WORKING:
         # might mean there are no data lines
         # trying running with args=['-step', 1, '-keep_class', 2, '-rescale', 0.001,0.001,0.001]
diff --git a/param-files/survey-1.xlsx b/param-files/survey-1.xlsx
deleted file mode 100644
index b43b56a..0000000
Binary files a/param-files/survey-1.xlsx and /dev/null differ