diff --git a/ophyd_devices/rt_lamni/rt_lamni_ophyd.py b/ophyd_devices/rt_lamni/rt_lamni_ophyd.py
index e878401..14b6b6a 100644
--- a/ophyd_devices/rt_lamni/rt_lamni_ophyd.py
+++ b/ophyd_devices/rt_lamni/rt_lamni_ophyd.py
@@ -450,9 +450,17 @@ class RtLamniController(Controller):
             )
 
         time.sleep(0.03)
-        # needs to be changed to configurable center psoition
-        self.get_device_manager().devices.lsamx.obj.move(8.866, wait=True)
-        self.get_device_manager().devices.lsamy.obj.move(10.18, wait=True)
+
+        lsamx_user_params = self.get_device_manager().devices.lsamx.user_parameter
+        if lsamx_user_params is None or lsamx_user_params.get("center") is None:
+            raise RuntimeError("lsamx center is not defined")
+        lsamy_user_params = self.get_device_manager().devices.lsamy.user_parameter
+        if lsamy_user_params is None or lsamy_user_params.get("center") is None:
+            raise RuntimeError("lsamy center is not defined")
+        lsamx_center = lsamx_user_params.get("center")
+        lsamy_center = lsamy_user_params.get("center")
+        self.get_device_manager().devices.lsamx.obj.move(lsamx_center, wait=True)
+        self.get_device_manager().devices.lsamy.obj.move(lsamy_center, wait=True)
         self.socket_put("J1")
 
         _waitforfeedbackctr = 0
diff --git a/ophyd_devices/sim/sim.py b/ophyd_devices/sim/sim.py
index 57ec57f..f2b4d0d 100644
--- a/ophyd_devices/sim/sim.py
+++ b/ophyd_devices/sim/sim.py
@@ -369,7 +369,7 @@ class SynFlyer(Device, PositionerBase):
         positions = np.asarray(positions)
 
         def produce_data(device, metadata):
-            buffer_time = 0.5
+            buffer_time = 0.2
             elapsed_time = 0
             bundle = BECMessage.BundleMessage()
             for ii in range(num_pos):