diff --git a/simpeg_drivers/components/factories/survey_factory.py b/simpeg_drivers/components/factories/survey_factory.py
index cfe38a7b..1169633e 100644
--- a/simpeg_drivers/components/factories/survey_factory.py
+++ b/simpeg_drivers/components/factories/survey_factory.py
@@ -214,8 +214,8 @@ def _add_data(self, survey, data, local_index, channel):
                 dobs.append(data_stack[component_id][channel_id, rx_id])
                 uncerts.append(uncert_stack[component_id][channel_id, rx_id])
 
-            survey.dobs = np.vstack([dobs]).flatten()
-            survey.std = np.vstack([uncerts]).flatten()
+            data_vec = np.vstack([dobs]).flatten()
+            uncertainty_vec = np.vstack([uncerts]).flatten()
 
         elif self.factory_type in ["magnetotellurics", "tipper"]:
             local_data = {}
@@ -235,12 +235,6 @@ def _add_data(self, survey, data, local_index, channel):
 
             data_vec = self._stack_channels(local_data, "row")
             uncertainty_vec = self._stack_channels(local_uncertainties, "row")
-            uncertainty_vec[np.isnan(data_vec)] = np.inf
-            data_vec[np.isnan(data_vec)] = (
-                self.dummy
-            )  # Nan's handled by inf uncertainties
-            survey.dobs = data_vec
-            survey.std = uncertainty_vec
 
         else:
             local_data = {k: v[local_index] for k, v in data.observed.items()}
@@ -250,12 +244,11 @@ def _add_data(self, survey, data, local_index, channel):
 
             data_vec = self._stack_channels(local_data, "column")
             uncertainty_vec = self._stack_channels(local_uncertainties, "column")
-            uncertainty_vec[np.isnan(data_vec)] = np.inf
-            data_vec[np.isnan(data_vec)] = (
-                self.dummy
-            )  # Nan's handled by inf uncertainties
-            survey.dobs = data_vec
-            survey.std = uncertainty_vec
+
+        uncertainty_vec[np.isnan(data_vec)] = np.inf
+        data_vec[np.isnan(data_vec)] = self.dummy  # Nan's handled by inf uncertainties
+        survey.dobs = data_vec
+        survey.std = uncertainty_vec
 
     def _stack_channels(self, channel_data: dict[str, np.ndarray], mode: str):
         """
diff --git a/simpeg_drivers/electromagnetics/time_domain/params.py b/simpeg_drivers/electromagnetics/time_domain/params.py
index e193526b..fb4623c4 100644
--- a/simpeg_drivers/electromagnetics/time_domain/params.py
+++ b/simpeg_drivers/electromagnetics/time_domain/params.py
@@ -54,7 +54,7 @@ def __init__(self, input_file=None, forward_only=False, **kwargs):
         self._y_channel_bool = None
         self._y_channel = None
         self._y_uncertainty = None
-        self._inversion_type = "tipper"
+
         self._model_type = "Conductivity (S/m)"
 
         super().__init__(input_file=input_file, forward_only=forward_only, **kwargs)