diff --git a/lasp/device/lasp_device_common.py b/lasp/device/lasp_device_common.py
index b8368e3..0790fdb 100644
--- a/lasp/device/lasp_device_common.py
+++ b/lasp/device/lasp_device_common.py
@@ -17,8 +17,12 @@ class DaqChannel:
     channel_metadata: str = ''
 
     def __post_init__(self):
-        self._qty = SIQtys.default
-        self._store('qty', self._qty)
+        if len(self.channel_metadata) > 0:
+            meta = json.loads(self.channel_metadata)
+            for key,val in meta.items():
+                setattr(self, key, val)
+        else:
+            self._qty = SIQtys.default
 
     @property
     def qty(self):
@@ -27,7 +31,7 @@ class DaqChannel:
     @qty.setter
     def qty(self, newqty):
         self._qty = newqty
-        self._store('qty', newqty)
+        self._store('_qty', newqty)
 
     def _store(self, name, val):
         if len(self.channel_metadata) > 0:
diff --git a/lasp/lasp_common.py b/lasp/lasp_common.py
index 3490e5e..9b152ec 100644
--- a/lasp/lasp_common.py
+++ b/lasp/lasp_common.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 import os, platform
 import shelve