diff --git a/src/fprime/common/models/serialize/array_type.py b/src/fprime/common/models/serialize/array_type.py
index fa96fc25..de5fafd3 100644
--- a/src/fprime/common/models/serialize/array_type.py
+++ b/src/fprime/common/models/serialize/array_type.py
@@ -3,13 +3,10 @@
 Created on May 29, 2020
 @author: jishii
 """
-import copy
-
 from .type_base import DictionaryType
 from .type_exceptions import (
     ArrayLengthException,
     NotInitializedException,
-    TypeMismatchException,
 )
 
 from . import serializable_type
diff --git a/src/fprime/common/models/serialize/bool_type.py b/src/fprime/common/models/serialize/bool_type.py
index 20eaf7a4..8e9087e7 100644
--- a/src/fprime/common/models/serialize/bool_type.py
+++ b/src/fprime/common/models/serialize/bool_type.py
@@ -32,7 +32,7 @@ def serialize(self):
         """Serialize a boolean value"""
         if self.val is None:
             raise NotInitializedException(type(self))
-        return struct.pack("B", self.TRUE if self.val else self.FALSE)
+        return struct.pack("B", self.TRUE if self._val else self.FALSE)
 
     def deserialize(self, data, offset):
         """Deserialize boolean value"""
diff --git a/src/fprime/common/models/serialize/numerical_types.py b/src/fprime/common/models/serialize/numerical_types.py
index e3f4760c..6da2617b 100644
--- a/src/fprime/common/models/serialize/numerical_types.py
+++ b/src/fprime/common/models/serialize/numerical_types.py
@@ -7,7 +7,6 @@
 @author mstarch
 """
 import abc
-import re
 import struct
 
 from .type_base import ValueType
@@ -18,8 +17,6 @@
     TypeRangeException,
 )
 
-# BITS_RE = re.compile(r"[IUF](\d\d?)")
-
 
 class NumericalType(ValueType, abc.ABC):
     """Numerical types that can be serialized using struct and are of some power of 2 byte width"""
@@ -42,14 +39,14 @@ def get_serialize_format():
 
     def serialize(self):
         """Serializes this type using struct and the val property"""
-        if self.val is None:
+        if self._val is None:
             raise NotInitializedException(type(self))
-        return struct.pack(self.get_serialize_format(), self.val)
+        return struct.pack(self.get_serialize_format(), self._val)
 
     def deserialize(self, data, offset):
         """Serializes this type using struct and the val property"""
         try:
-            self.val = struct.unpack_from(self.get_serialize_format(), data, offset)[0]
+            self._val = struct.unpack_from(self.get_serialize_format(), data, offset)[0]
         except struct.error as err:
             raise DeserializeException(str(err))
 
diff --git a/src/fprime/common/models/serialize/serializable_type.py b/src/fprime/common/models/serialize/serializable_type.py
index 23e1c3d6..d5cb3118 100644
--- a/src/fprime/common/models/serialize/serializable_type.py
+++ b/src/fprime/common/models/serialize/serializable_type.py
@@ -4,8 +4,6 @@
 @author: tcanham
 
 """
-import copy
-
 from .type_base import BaseType, DictionaryType
 from .type_exceptions import (
     MissingMemberException,