diff --git a/utils/macmaster.py b/utils/macmaster.py
old mode 100644
new mode 100755
index 0ebac3a..f625a37
--- a/utils/macmaster.py
+++ b/utils/macmaster.py
@@ -24,7 +24,7 @@ class MasterMACS():
     def receive(self):
         buf = self._socke.recv(35, socket.MSG_WAITALL)
         if len(buf) < 35:
-            raise  EOFException('Master MACS returned only %d bytes, 30 expected' % len(buf))
+            raise  EOFException('Master MACS returned only %d bytes, 35 expected' % len(buf))
         idx = buf.find(0x0D)
         ackbyte = buf[idx-1]
         if ackbyte == 0x06:
diff --git a/utils/syncMasterMAC.py b/utils/syncMasterMAC.py
index 3e27a9b..3f35e38 100755
--- a/utils/syncMasterMAC.py
+++ b/utils/syncMasterMAC.py
@@ -6,6 +6,7 @@ from a MasterMAC motor controller.
 Mark Koennecke, February 2023
 """
 import sys
+import time
 
 from macmaster import MasterMACS
 
@@ -33,6 +34,7 @@ def pretty_line(newlist, comma_list):
 def transact(command):
     global mac
     mac.send(command)
+    time.sleep(.1)
     return mac.receive()
 
 def fix_line(par_list, index_list):
@@ -40,18 +42,23 @@ def fix_line(par_list, index_list):
     addridx = index_list.index('ADDR')
     motNo = int(par_list[addridx])
     ack, reply = transact('%dR24' % motNo)
-    idx = reply.find('=')
-    lowlim = reply[idx+1:]
-    lowidx = index_list.index('DLLM')
-    par_list[lowidx] = lowlim.strip()
+    if ack == 'NO':
+        idx = reply.find('=')
+        lowlim = reply[idx+1:]
+        lowidx = index_list.index('DLLM')
+        par_list[lowidx] = lowlim.strip()
     ack, reply = transact('%dR23' % motNo)
-    idx = reply.find('=')
-    highlim =  reply[idx+1:]
-    highidx = index_list.index('DHLM')
-    par_list[highidx] = highlim.strip()
-    # speed = transact('Q%d03' % motNo)
-    # speedidx = index_list['VELO']
-    # par_list[speedidx] = speed.trim()
+    if ack == 'NO':
+        idx = reply.find('=')
+        highlim =  reply[idx+1:]
+        highidx = index_list.index('DHLM')
+        par_list[highidx] = highlim.strip()
+    ack, reply = transact('%dR05' % motNo)
+    if ack == 'NO':
+        idx = reply.find('=')
+        speed =  reply[idx+1:]
+        speedidx = index_list.index('VELO')
+        par_list[speedidx] = speed.strip()
     return par_list
 
 def scan_substitution_file(filename):