diff --git a/pyproject.toml b/pyproject.toml
index 96c12d2..ab69681 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "vban-cmd"
-version = "1.1.2"
+version = "1.1.3"
 description = "Python interface for the VBAN RT Packet Service (Sendtext)"
 authors = ["onyx-and-iris <code@onyxandiris.online>"]
 license = "MIT"
diff --git a/vban_cmd/base.py b/vban_cmd/base.py
index 9a0509e..ffb06ff 100644
--- a/vban_cmd/base.py
+++ b/vban_cmd/base.py
@@ -14,7 +14,7 @@ from .packet import (
     VBAN_VMRT_Packet_Header,
 )
 from .subject import Subject
-from .util import script
+from .util import comp, script
 
 Socket = IntEnum("Socket", "register request response", start=0)
 
@@ -170,14 +170,8 @@ class VbanCmd(metaclass=ABCMeta):
     def ldirty(self):
         """True iff a level value has changed."""
         self._strip_comp, self._bus_comp = (
-            tuple(
-                not a == b
-                for a, b in zip(self._public_packet.inputlevels, self._strip_buf)
-            ),
-            tuple(
-                not a == b
-                for a, b in zip(self._public_packet.outputlevels, self._bus_buf)
-            ),
+            tuple(not x for x in comp(self.cache["strip_level"], self._strip_buf)),
+            tuple(not x for x in comp(self.cache["bus_level"], self._bus_buf)),
         )
         return any(any(l) for l in (self._strip_comp, self._bus_comp))
 
@@ -201,8 +195,8 @@ class VbanCmd(metaclass=ABCMeta):
             self._pdirty = self._pp.pdirty(self.public_packet)
 
             if self.ldirty:
-                self.cache["strip_level"] = tuple(self._strip_buf)
-                self.cache["bus_level"] = tuple(self._bus_buf)
+                self.cache["strip_level"] = self._strip_buf
+                self.cache["bus_level"] = self._bus_buf
                 self.subject.notify("ldirty")
             if self.public_packet != self._pp:
                 self._public_packet = self._pp
@@ -219,8 +213,8 @@ class VbanCmd(metaclass=ABCMeta):
         strip levels in PREFADER mode.
         """
         return (
-            [val for val in packet.inputlevels],
-            [val for val in packet.outputlevels],
+            tuple(val for val in packet.inputlevels),
+            tuple(val for val in packet.outputlevels),
         )
 
     def apply(self, data: dict):
diff --git a/vban_cmd/bus.py b/vban_cmd/bus.py
index 147d8f4..1b0fca9 100644
--- a/vban_cmd/bus.py
+++ b/vban_cmd/bus.py
@@ -71,7 +71,6 @@ class BusLevel(IRemote):
     def getter(self):
         """Returns a tuple of level values for the channel."""
 
-        range_ = self.level_map[self.index]
         return tuple(
             round(-i * 0.01, 1)
             for i in self._remote.cache["bus_level"][self.range[0] : self.range[-1]]
diff --git a/vban_cmd/util.py b/vban_cmd/util.py
index 9f23661..2c92da5 100644
--- a/vban_cmd/util.py
+++ b/vban_cmd/util.py
@@ -1,3 +1,6 @@
+from typing import Iterator
+
+
 def cache_bool(func, param):
     """Check cache for a bool prop"""
 
@@ -49,3 +52,15 @@ def script(func):
         return func(remote, script)
 
     return wrapper
+
+
+def comp(t0: tuple, t1: tuple) -> Iterator[bool]:
+    """
+    Generator function, accepts two tuples.
+
+    Evaluates equality of each member in both tuples.
+    """
+    for a, b in zip(t0, t1):
+        if b <= 9500:
+            yield a == b
+        yield True