diff --git a/examples/backlash.py b/examples/backlash.py
index 36306ea..9d20418 100755
--- a/examples/backlash.py
+++ b/examples/backlash.py
@@ -95,7 +95,7 @@ def backlash():
       if backlash <= 999:
         print('Setting backlash to calculated value')
         config.scope.set_backlash(axis, backlash)
-        ans = input(test)
+        ans = input(msg_test)
       else:
         print('ERROR: backlash is more than maximum of 999')
     else:
diff --git a/examples/batch_align.py b/examples/batch_align.py
index 6dd1587..a442082 100755
--- a/examples/batch_align.py
+++ b/examples/batch_align.py
@@ -70,18 +70,18 @@ def batch_align():
   config.scope.send_str(':SX0C,06:00:54#')
   config.scope.send_str(':SX0D,44:56:53#')
   config.scope.send_str(':SX0E,-1#')
-  
+
   print('Triggering align')
   # Trigger align
   config.scope.send_str(':SX09,1#')
 
   print('Align status: ' + str(config.scope.get_align_status()))
-  
+
   count = 0
   while count < 30:
     ra = config.scope.get_ra()
     de = config.scope.get_de()
-  
+
     cor_azm = config.scope.get_cor_azm()
     cor_alt = config.scope.get_cor_alt()
     cor_do  = config.scope.get_cor_do()
diff --git a/examples/drift_test.py b/examples/drift_test.py
index 1bb10cb..a4e7c88 100755
--- a/examples/drift_test.py
+++ b/examples/drift_test.py
@@ -71,7 +71,7 @@ def drift_test(iterations = 60, interval = 10):
 
     dt = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
     print('%s %s %s %s %s %s %s %s' % (dt, home, status, curr_ra, curr_de, equ, '{:6.3f}'.format(ra_arc_secs), '{:6.3f}'.format(de_arc_secs)))
-    
+
     try:
       time.sleep(interval)
     except KeyboardInterrupt:
diff --git a/examples/home.py b/examples/home.py
index e1b7467..e81be19 100755
--- a/examples/home.py
+++ b/examples/home.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 '''
-This is the program used to end a test sequence. 
+This is the program used to end a test sequence.
 It displays the date/time, UTC offset, latitude and longitude
 It then issues the command to return the scope to the home position
 '''
diff --git a/examples/report.py b/examples/report.py
index 55507b7..f9d82c4 100755
--- a/examples/report.py
+++ b/examples/report.py
@@ -17,7 +17,7 @@ def report(interval = 10):
 
     if config.scope.is_slewing is True:
       status = 'SLW'
-      
+
     if config.scope.is_tracking is True:
       status = 'TRK'
 
@@ -26,7 +26,7 @@ def report(interval = 10):
 
     dt = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
     print('%s %s %s %s' % (dt, status, curr_ra, curr_de))
-    
+
     try:
       time.sleep(interval)
     except KeyboardInterrupt:
diff --git a/examples/slew.py b/examples/slew.py
index dcc93ac..01a7daf 100755
--- a/examples/slew.py
+++ b/examples/slew.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 '''
-This is the program used to end a test sequence. 
+This is the program used to end a test sequence.
 It displays the date/time, UTC offset, latitude and longitude
 It then issues the command to return the config.scope to the home position
 '''
diff --git a/examples/stress_test.py b/examples/stress_test.py
index 1d57704..f018008 100755
--- a/examples/stress_test.py
+++ b/examples/stress_test.py
@@ -12,8 +12,8 @@
 azm_e = '170:00:00'
 
 num_iterations    = 20
-poll_duration     = 30
-tracking_duration = 30
+poll_duration     = 20
+tracking_duration = 20
 
 def print_status(status = ''):
   curr_alt = config.scope.get_alt()
@@ -46,6 +46,12 @@ def slew(target_alt, target_azm):
 def stress_test():
   count = 0
 
+  print('Starting tracking')
+  if config.scope.tracking_on() == '0':
+    print('Tracking failed')
+    time.sleep(3)
+    return
+
   while True:
     # Increment the iteration counter
     count = count + 1
@@ -59,13 +65,13 @@ def stress_test():
     print('Iteration: ' + str(count))
 
     # Switch between east of meridian and west of it, using azimuth
-    if count % 2: 
+    if count % 2:
       azm = azm_w
     else:
       azm = azm_e
 
     # Slew to target location
-    slew(config.scope, alt, azm)
+    slew(alt, azm)
 
     slew_end = False
     # Check for end of slew
@@ -74,11 +80,11 @@ def stress_test():
       try:
         # Check if the slew ended
         config.scope.update_status()
-        if config.scope.is_slewing is False and scope.is_tracking is True:
+        if config.scope.is_slewing is False and config.scope.is_tracking is True:
           # Slew ended
           slew_end = True
 
-        print_status(config.scope, 'SLW')
+        print_status('SLW')
         time.sleep(poll_duration)
 
       except KeyboardInterrupt:
@@ -87,5 +93,5 @@ def stress_test():
         return
 
     # Scope now tracking
-    print_status(config.scope, 'TRK')
+    print_status('TRK')
     time.sleep(tracking_duration)
diff --git a/lx200/onstep.py b/lx200/onstep.py
index 090055c..08cbffa 100644
--- a/lx200/onstep.py
+++ b/lx200/onstep.py
@@ -176,7 +176,7 @@ def slew_equ(self):
     rc = self.scope.recv()
     if rc == '0':
       return rc, 'Goto is possible'
-    elif rc == '1': 
+    elif rc == '1':
       return rc, 'below the horizon limit'
     elif rc == '2':
       return rc, 'above overhead limit'
@@ -203,7 +203,7 @@ def slew_hor(self):
     rc = self.scope.recv()
     if rc == '0':
       return rc, 'Goto is possible'
-    elif rc == '1': 
+    elif rc == '1':
       return rc, 'below the horizon limit'
     elif rc == '2':
       return rc, 'above overhead limit'
@@ -230,7 +230,7 @@ def slew_polar(self):
     rc = self.scope.recv()
     if rc == '0':
       return rc, 'Goto is possible'
-    elif rc == '1': 
+    elif rc == '1':
       return rc, 'below the horizon limit'
     elif rc == '2':
       return rc, 'above overhead limit'
@@ -283,7 +283,7 @@ def get_backlash(self, axis = 1):
     return self.scope.recv().replace('#', '')
 
   def get_debug_equ(self):
-    # Get Equatorial values in decimal 
+    # Get Equatorial values in decimal
     self.scope.send(':GXFE#')
     return self.scope.recv().replace('#', '')