diff --git a/controllers/tour.py b/controllers/tour.py
index 9f92b786..810ab9a9 100644
--- a/controllers/tour.py
+++ b/controllers/tour.py
@@ -217,6 +217,8 @@ def data():
             tss_targets = {}
             for i, ts in enumerate(request.vars['tourstops']):
                 ts = {
+                    # All fields not otherwise specfied return to their default
+                    **{k:db.tourstop.get(k).default for k in db.tourstop.fields if k not in ['created', 'updated']},
                     **ts_shared,
                     **ts,
                     # Deep-clone template_data, should always exist
diff --git a/models/db.py b/models/db.py
index 57c69a51..4068c6e6 100755
--- a/models/db.py
+++ b/models/db.py
@@ -772,10 +772,10 @@
     Field('identifier', type='string', notnull=True),  # Unique identifier for tourstop, for establishing symlinks
     Field('ord', type='integer', notnull=True),  # The position of this tourstop in the tour, starting with 1
     Field('ott', type='integer', notnull=False),  # The OTT this tourstop points at. NULL => return to start
-    Field('secondary_ott', type='integer', notnull=True),  # A second OTT when targeting a common ancestor
+    Field('secondary_ott', type='integer', notnull=True, default=0),  # A second OTT when targeting a common ancestor
     Field('qs_opts', type='string', notnull=False, default=''),  # QS-style options to apply to modify tourstop, e.g. into_node=true&initmark=...
     Field('author', type='text', notnull=True, default=''),  # Author of tourstop (doesn't necessarily match tour in case of remix)
-    Field('transition_in', type='string', notnull=True, requires=IS_IN_SET(('fly', 'leap', 'fly_straight'))),  # Transition to use when flying to stop
+    Field('transition_in', type='string', notnull=True, requires=IS_IN_SET(('fly', 'leap', 'fly_straight')), default='fly'),  # Transition to use when flying to stop
     Field('fly_in_speed', type='double', notnull=False, default=1),  # Speed relative to global_anim_speed
     Field('transition_in_wait', type='integer', notnull=False),  # How long to wait before entering into transition
     Field('stop_wait', type='integer', notnull=False),  # How long to wait at this stop (null => wait until "next" is pressed)
@@ -783,7 +783,7 @@
     Field('template_data', type='text', notnull=True,
         filter_in=lambda obj: json.dumps(obj),
         filter_out=lambda txt: json.loads(txt)),  # JSON template data for tourstop
-    Field('lang', type='string', notnull=True, length=3), #the 'primary' 2  or 3 letter 'lang' code for this name (e.g. 'en', 'cmn'). See http://www.w3.org/International/articles/language-tags/
+    Field('lang', type='string', notnull=True, length=3, default='en'), #the 'primary' 2  or 3 letter 'lang' code for this name (e.g. 'en', 'cmn'). See http://www.w3.org/International/articles/language-tags/
     Field('checked_by', type='string'),  # Who has checked the validity of this data?
     Field('checked_updated', 'datetime', default=None),  # When did they do it?
     Field('visible_in_search', 'boolean', notnull=True, default=True),  # Available in tourstop-search for remixing a tour?
diff --git a/tests/unit/test_controllers_tour.py b/tests/unit/test_controllers_tour.py
index abec1811..7b66a4e7 100644
--- a/tests/unit/test_controllers_tour.py
+++ b/tests/unit/test_controllers_tour.py
@@ -361,6 +361,71 @@ def test_data_shareddata(self):
             ]
         )
 
+    def test_data_resettodefault(self):
+        """Removing values will reset them to their default"""
+        otts = util.find_unsponsored_otts(10)
+
+        # Can insert a tour with a common ancestor pinpoint
+        t = self.tour_put('UT::TOUR', dict(
+            title="A unit test tour",
+            description="It's a nice tour",
+            author="UT::Author",
+            tourstop_shared=dict(
+                stop_wait=1234,
+            ),
+            tourstops=[
+                dict(
+                    ott=otts[0],
+                    identifier="ott0",
+                    stop_wait=3,
+                    author="Frank",
+                ),
+                dict(
+                    ott=otts[1],
+                    identifier="ott1",
+                    author="Gelda",
+                ),
+            ],
+        ))
+        # One entry uses default
+        self.assertEqual(
+            [ts['stop_wait'] for ts in self.tour_get('UT::TOUR')['tourstops']],
+            [3, 1234],
+        )
+        # Both have an Author
+        self.assertEqual(
+            [ts['author'] for ts in self.tour_get('UT::TOUR')['tourstops']],
+            ['Frank', 'Gelda'],
+        )
+
+        # Clear author, stop_wait. Get set back to their DB defaults
+        t = self.tour_put('UT::TOUR', dict(
+            title="A unit test tour",
+            description="It's a nice tour",
+            author="UT::Author",
+            tourstop_shared=dict(
+            ),
+            tourstops=[
+                dict(
+                    ott=otts[0],
+                    identifier="ott0",
+                    stop_wait=3,
+                ),
+                dict(
+                    ott=otts[1],
+                    identifier="ott1",
+                ),
+            ],
+        ))
+        self.assertEqual(
+            [ts['stop_wait'] for ts in self.tour_get('UT::TOUR')['tourstops']],
+            [3, None],
+        )
+        self.assertEqual(
+            [ts['author'] for ts in self.tour_get('UT::TOUR')['tourstops']],
+            ['', ''],
+        )
+
     def test_list(self):
         def t_list(tours, include_rest=""):
             return util.call_controller(