Index: dialin/ui/hd_simulator.py
===================================================================
diff -u -r703231f83070516744deb638547eda07aa9d02a7 -r15f670595abe0e0a8fcbb340cc237c09bc64cb1e
--- dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 703231f83070516744deb638547eda07aa9d02a7)
+++ dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 15f670595abe0e0a8fcbb340cc237c09bc64cb1e)
@@ -335,12 +335,11 @@
         self.logger.debug("Priming ...")
         state = 0
         total_seconds = 100
-        # for seconds_remaining in range(total_seconds, -1, -1):
-        #     if seconds_remaining % (total_seconds // 3) == 0:
-        #         state += 1
-        self.cmd_send_priming_time_remaining(state, 30, total_seconds)
-        sleep(1)
-        self.cmd_send_priming_time_remaining(state, 0, total_seconds)
+        for seconds_remaining in range(total_seconds, -1, -1):
+            if seconds_remaining % (total_seconds // 3) == 0:
+                state += 1
+            self.cmd_send_priming_time_remaining(state, seconds_remaining, total_seconds)
+            sleep(0.05)
         self.logger.debug("Finished priming.")
 
     def _handler_ui_pre_treatment_uf_request(self, message):