diff --git a/src/calng/agipd_gpu.py b/src/calng/agipd_gpu.py
index c1d63382b4a0ad4fbfbbe9f3f01491be8c442eb3..8526836f66141e16d70bb1b1ee275cb7031bc0b0 100644
--- a/src/calng/agipd_gpu.py
+++ b/src/calng/agipd_gpu.py
@@ -136,9 +136,6 @@ class AgipdGpuRunner(base_gpu.BaseGpuRunner):
             )
         else:
             self.override_md_additional_offset(override_md_additional_offset)
-        print(
-            f"Rel gain pc min max: {self.rel_gain_pc_map_gpu.min()}, {self.rel_gain_pc_map_gpu.max()}"
-        )
 
     def override_md_additional_offset(self, override_value):
         self.md_additional_offset_gpu.fill(override_value)
diff --git a/src/calng/agipd_gpu_kernels.cpp b/src/calng/agipd_gpu_kernels.cpp
index 2a9d7dc375765ffa903605cce0c948566d734150..7c8a65fe61a04796fdeed06736feb287af5d0568 100644
--- a/src/calng/agipd_gpu_kernels.cpp
+++ b/src/calng/agipd_gpu_kernels.cpp
@@ -20,6 +20,7 @@ extern "C" {
 							const float* rel_gain_pc_map,
 							const float* md_additional_offset,
 							const float* rel_gain_xray_map,
+							const float g_gain_value,
 							const unsigned int* bad_pixel_map,
 							const float bad_pixel_mask_value,
 							unsigned char* gain_map,
diff --git a/src/calng/base_correction.py b/src/calng/base_correction.py
index 1f0e26c625f44908510bfa6ca072cc0c6c7f305d..12d4a96e68333b11d2f01831215c489cdbb4a537 100644
--- a/src/calng/base_correction.py
+++ b/src/calng/base_correction.py
@@ -366,6 +366,7 @@ class BaseCorrection(PythonDevice):
         self._buffer_lock = threading.Lock()
         self.KARABO_SLOT(self.loadMostRecentConstants)
         self.KARABO_SLOT(self.requestScene)
+
         # TODO: the CalCatFriend could add these for us
         # note: overly complicated slot function creation necessary for closure to work
         def make_wrapper_capturing_constant(constant):
diff --git a/src/calng/base_gpu.py b/src/calng/base_gpu.py
index 1b1e9bc113a903f31e768e84a6adc3ac3583d99a..868d42e0866e2be0866f6e2db45a9f92c93dabc2 100644
--- a/src/calng/base_gpu.py
+++ b/src/calng/base_gpu.py
@@ -73,7 +73,7 @@ class BaseGpuRunner:
         self.preview_raw = np.empty(self.preview_shape, dtype=np.float32)
         self.preview_corrected = np.empty(self.preview_shape, dtype=np.float32)
 
-    # functions to get data from respective buffers to cell, x, y shape for preview computation
+    # to get data from respective buffers to cell, x, y shape for preview computation
     # TODO: handle shape juggling programmatically, removing need for these two helpers
     def _preview_preprocess_raw(self):
         """Should return view of self.input_data_gpu with shape (cell, x, y)"""
diff --git a/src/calng/calcat_utils.py b/src/calng/calcat_utils.py
index 78c9a953b467b9b97db17c69fff1a018ad8a4114..3d1a2dc536b1c1fd3a950c4ec1f7c9d82f5f9da5 100644
--- a/src/calng/calcat_utils.py
+++ b/src/calng/calcat_utils.py
@@ -15,7 +15,6 @@ from calibration_client.modules import (
     CalibrationConstantVersion,
     Detector,
     DetectorType,
-    Parameter,
     PhysicalDetectorUnit,
 )
 from karabo.bound import (
@@ -345,18 +344,18 @@ class BaseCalcatFriend:
             constant = self._constant_enum_class[constant]
 
         calibration_id = self.calibration_id(constant.name)
-        self._set_status(constant, f"calibrationId", calibration_id)
+        self._set_status(constant, "calibrationId", calibration_id)
 
         condition = self._constants_need_conditions[constant]()
         condition_id = self.condition_id(
             self._karabo_da_to_float_uuid[karabo_da], condition
         )
-        self._set_status(constant, f"conditionId", condition_id)
+        self._set_status(constant, "conditionId", condition_id)
 
         constant_id = self.constant_id(
             calibration_id=calibration_id, condition_id=condition_id
         )
-        self._set_status(constant, f"constantId", constant_id)
+        self._set_status(constant, "constantId", constant_id)
 
         resp = CalibrationConstantVersion.get_by_uk(
             self.client,
@@ -369,8 +368,8 @@ class BaseCalcatFriend:
         timestamp = resp["data"][
             "begin_at"
         ]  # TODO: check which key we like (also has begin_validity_at)
-        self._set_status(constant, f"createdAt", timestamp)
-        self._set_status(constant, f"constantVersionId", resp["data"]["id"])
+        self._set_status(constant, "createdAt", timestamp)
+        self._set_status(constant, "constantVersionId", resp["data"]["id"])
 
         file_path = (
             self.caldb_store / resp["data"]["path_to_file"] / resp["data"]["file_name"]
@@ -379,7 +378,7 @@ class BaseCalcatFriend:
         with h5py.File(file_path, "r") as fd:
             constant_data = np.array(fd[resp["data"]["data_set_name"]]["data"])
         self.cached_constants[constant] = constant_data
-        self._set_status(constant, f"found", True)
+        self._set_status(constant, "found", True)
 
         return constant_data
 
@@ -399,12 +398,12 @@ class BaseCalcatFriend:
         with h5py.File(file_path, "r") as fd:
             constant_data = np.array(fd[resp["data"]["data_set_name"]]["data"])
         self.cached_constants[constant] = constant_data
-        self._set_status(constant, f"createdAt", resp["data"]["begin_at"])
-        self._set_status(constant, f"calibrationId", "manual override")
-        self._set_status(constant, f"conditionId", "manual override")
-        self._set_status(constant, f"constantId", "manual override")
-        self._set_status(constant, f"constantVersionId", constant_version_id)
-        self._set_status(constant, f"found", True)
+        self._set_status(constant, "createdAt", resp["data"]["begin_at"])
+        self._set_status(constant, "calibrationId", "manual override")
+        self._set_status(constant, "conditionId", "manual override")
+        self._set_status(constant, "constantId", "manual override")
+        self._set_status(constant, "constantVersionId", constant_version_id)
+        self._set_status(constant, "found", True)
         return constant_data
 
     def get_constant_version_and_call_me_back(
@@ -437,8 +436,8 @@ class BaseCalcatFriend:
 
     def flush_constants(self):
         for constant in self._constant_enum_class:
-            self._set_status(constant, f"createdAt", "")
-            self._set_status(constant, f"found", False)
+            self._set_status(constant, "createdAt", "")
+            self._set_status(constant, "found", False)
 
 
 class AgipdConstants(enum.Enum):