diff --git a/cps/db.py b/cps/db.py
index dc280ad8..5765bf68 100755
--- a/cps/db.py
+++ b/cps/db.py
@@ -31,7 +31,7 @@ from sqlalchemy.ext.declarative import declarative_base
 
 
 session = None
-cc_exceptions = ['comments', 'float', 'composite', 'series']
+cc_exceptions = ['datetime', 'comments', 'float', 'composite', 'series']
 cc_classes = {}
 
 
@@ -353,7 +353,7 @@ def setup_db(config):
     # conn.connection.create_function('upper', 1, ucase)
 
     if not cc_classes:
-        cc = conn.execute("SELECT id, datatype, normalized FROM custom_columns")
+        cc = conn.execute("SELECT id, datatype FROM custom_columns")
 
         cc_ids = []
         books_custom_column_links = {}
@@ -366,7 +366,7 @@ def setup_db(config):
                                                                  ForeignKey('custom_column_' + str(row.id) + '.id'),
                                                                  primary_key=True)
                                                           )
-                cc_ids.append([row.id, row.datatype, row.normalized])
+                cc_ids.append([row.id, row.datatype])
                 if row.datatype == 'bool':
                     ccdict = {'__tablename__': 'custom_column_' + str(row.id),
                               'id': Column(Integer, primary_key=True),
@@ -377,11 +377,6 @@ def setup_db(config):
                               'id': Column(Integer, primary_key=True),
                               'book': Column(Integer, ForeignKey('books.id')),
                               'value': Column(Integer)}
-                elif not row.normalized:
-                    ccdict = {'__tablename__': 'custom_column_' + str(row.id),
-                              'id': Column(Integer, primary_key=True),
-                              'book': Column(Integer, ForeignKey('books.id')),
-                              'value': Column(String)}
                 else:
                     ccdict = {'__tablename__': 'custom_column_' + str(row.id),
                               'id': Column(Integer, primary_key=True),
@@ -389,8 +384,7 @@ def setup_db(config):
                 cc_classes[row.id] = type(str('Custom_Column_' + str(row.id)), (Base,), ccdict)
 
         for cc_id in cc_ids:
-            normalized = cc_id[2]
-            if (not normalized):
+            if (cc_id[1] == 'bool') or (cc_id[1] == 'int'):
                 setattr(Books, 'custom_column_' + str(cc_id[0]), relationship(cc_classes[cc_id[0]],
                                                                            primaryjoin=(
                                                                            Books.id == cc_classes[cc_id[0]].book),
@@ -399,16 +393,6 @@ def setup_db(config):
                 setattr(Books, 'custom_column_' + str(cc_id[0]), relationship(cc_classes[cc_id[0]],
                                                                            secondary=books_custom_column_links[cc_id[0]],
                                                                            backref='books'))
-        #for cc_id in cc_ids:
-        #    if (cc_id[1] == 'bool') or (cc_id[1] == 'int'):
-        #        setattr(Books, 'custom_column_' + str(cc_id[2]), relationship(cc_classes[cc_id[0]],
-        #                                                                   primaryjoin=(
-        #                                                                   Books.id == cc_classes[cc_id[0]].book),
-        #                                                                   backref='books'))
-        #    else:
-        #        setattr(Books, 'custom_column_' + str(cc_id[2]), relationship(cc_classes[cc_id[0]],
-        #                                                                   secondary=books_custom_column_links[cc_id[0]],
-        #                                                                   backref='books'))
 
 
     global session
diff --git a/cps/kobo.py b/cps/kobo.py
index dce6869a..52ff8f2c 100644
--- a/cps/kobo.py
+++ b/cps/kobo.py
@@ -371,42 +371,18 @@ def create_metadata(book):
     return metadata
 
 
-def get_single_cc_value(book, custom_column_name):
-    custom_column_values = get_custom_column_values(book, custom_column_name)
-    if custom_column_values:
-        return custom_column_values[0].value
-    return None
-
-
-def get_custom_column_values(book, custom_column_name):
-    custom_column = (
-        db.session.query(db.Custom_Columns)
-        .filter(db.Custom_Columns.label == custom_column_name)
-        .one()
-    )
-    cc_string = "custom_column_" + str(custom_column.id)
-
-    return getattr(book, cc_string)
-
-
 def reading_state(book):
-    # TODO: Make the state custom columns configurable.
-    # Possibly use calibre-web User db instead of the Calibre metadata.db?
+    # TODO: Implement
     reading_state = {
-        "StatusInfo": {
-            "LastModified": get_single_cc_value(book, "lastreadtimestamp"),
-            "Status": get_single_cc_value(book, "reading_status"),
-        }
+        # "StatusInfo": {
+        #     "LastModified": get_single_cc_value(book, "lastreadtimestamp"),
+        #     "Status": get_single_cc_value(book, "reading_status"),
+        # }
         # TODO: CurrentBookmark, Location
     }
     return reading_state
 
 
-# def get_shelves(book):
-#     shelves = get_custom_column_values(book, "myshelves")
-#     return shelves
-
-
 @kobo.route(
     "/<book_uuid>/<horizontal>/<vertical>/<jpeg_quality>/<monochrome>/image.jpg"
 )
diff --git a/optional-requirements.txt b/optional-requirements.txt
index 605667d2..043a6943 100644
--- a/optional-requirements.txt
+++ b/optional-requirements.txt
@@ -32,3 +32,6 @@ rarfile>=2.7
 # other
 natsort>=2.2.0
 git+https://github.com/OzzieIsaacs/comicapi.git@5346716578b2843f54d522f44d01bc8d25001d24#egg=comicapi
+
+# Unsupported/Experimental backblaze integration for Kobo endpoint.
+b2sdk>=1.0.2,<2.0.0
diff --git a/requirements.txt b/requirements.txt
index d0c541a5..2ef6835d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,5 +13,4 @@ SQLAlchemy>=1.1.0
 tornado>=4.1
 Wand>=0.4.4
 unidecode>=0.04.19
-b2sdk>=1.0.2,<2.0.0
 jsonschema>=3.2.0