diff --git a/malcolm/parts/pmac/pmactrajectorypart.py b/malcolm/parts/pmac/pmactrajectorypart.py
index cf579ba3d..8ac762f7e 100644
--- a/malcolm/parts/pmac/pmactrajectorypart.py
+++ b/malcolm/parts/pmac/pmactrajectorypart.py
@@ -24,7 +24,7 @@
 TRIG_ZERO = 8        # Capture 0, Frame 0, Detector 0
 
 # How many generator points to load each time
-POINTS_PER_BUILD = 1000
+POINTS_PER_BUILD = 2000
 
 # All possible PMAC CS axis assignment
 cs_axis_names = list("ABCUVWXYZ")
@@ -206,7 +206,7 @@ def move_to_start(self, task, start_index):
             time_array = [acceleration_time, move_time - 2 * acceleration_time,
                           acceleration_time]
             velocity_mode = [CURRENT_TO_NEXT, PREV_TO_CURRENT, ZERO_VELOCITY]
-            user_programs = [NO_PROGRAM, NO_PROGRAM, NO_PROGRAM]
+            user_programs = [NO_PROGRAM, NO_PROGRAM, TRIG_ZERO]
             for axis_name, positions in trajectory.items():
                 motor_info = self.axis_mapping[axis_name]
                 start_pos = positions[0]
@@ -217,7 +217,7 @@ def move_to_start(self, task, start_index):
         else:
             time_array = [move_time]
             velocity_mode = [ZERO_VELOCITY]
-            user_programs = [NO_PROGRAM]
+            user_programs = [TRIG_ZERO]
 
         self.write_profile_points(task, time_array, velocity_mode, trajectory,
                                   user_programs)
diff --git a/tests/test_parts/test_pmac/test_pmactrajectorypart.py b/tests/test_parts/test_pmac/test_pmactrajectorypart.py
index 96da74f0a..de69c13a9 100644
--- a/tests/test_parts/test_pmac/test_pmactrajectorypart.py
+++ b/tests/test_parts/test_pmac/test_pmactrajectorypart.py
@@ -92,7 +92,7 @@ def test_configure(self):
         self.assertEqual(task.put_many.call_args_list[1][0][1], dict(
             timeArray=[100000, 437500, 100000],
             velocityMode=[2, 1, 3],
-            userPrograms=[0, 0, 0],
+            userPrograms=[0, 0, 8],
             pointsToBuild=3,
             positionsA=[0.45, -0.087500000000000008, -0.1375],
             positionsB=[0.0, 0.0, 0.0]))
@@ -189,7 +189,7 @@ def test_long_move(self):
             velocityMode=[
                 2, 1, 1, 1, 3],
             userPrograms=[
-                0, 0, 0, 0, 0],
+                0, 0, 0, 0, 8],
             pointsToBuild=5,
             positionsA=[
                 -10.087499999999999, -6.7875, -3.4875, -0.1875, -0.1375],