Index: dialin/ui/hd_simulator.py
===================================================================
diff -u -raab1e486e4ba2df0ca49cf41c4ea9954c6f6de1f -r4170ddc48204a32d3fdd12663325ee3f6e257b83
--- dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision aab1e486e4ba2df0ca49cf41c4ea9954c6f6de1f)
+++ dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 4170ddc48204a32d3fdd12663325ee3f6e257b83)
@@ -1341,7 +1341,6 @@
 
         payload = float_to_bytearray(target)
         payload += float_to_bytearray(current)
-        payload += float_to_bytearray(0)
 
         message = DenaliMessage.build_message(channel_id=DenaliChannels.hd_to_ui_ch_id,
                                               message_id=MsgIds.MSG_ID_HD_BLOOD_PRIME_PROGRESS.value,