diff --git a/finetune.py b/finetune.py
index af79ceb..767b1a7 100644
--- a/finetune.py
+++ b/finetune.py
@@ -266,8 +266,8 @@ def run(args):
             wandb.run.log({"epoch": epoch}, commit=True)
 
         # Save checkpoint from last epoch
-        if epoch == 1:
-            # cerate ckpts folder if it does not exist
+        if epoch == args.max_epochs - 1:
+            # create ckpts folder if it does not exist
             if not os.path.exists(args.checkpoint_path):
                 os.makedirs(args.checkpoint_path)
             torch.save(
diff --git a/orb_models/forcefield/base.py b/orb_models/forcefield/base.py
index 499fc53..63b9422 100644
--- a/orb_models/forcefield/base.py
+++ b/orb_models/forcefield/base.py
@@ -2,8 +2,7 @@
 
 from collections import defaultdict
 from copy import deepcopy
-from typing import (Any, Dict, List, Mapping, NamedTuple, Optional, Sequence,
-                    Union)
+from typing import Any, Dict, List, Mapping, NamedTuple, Optional, Sequence, Union
 
 import torch
 import tree
diff --git a/orb_models/forcefield/calculator.py b/orb_models/forcefield/calculator.py
index cab0ace..d785438 100644
--- a/orb_models/forcefield/calculator.py
+++ b/orb_models/forcefield/calculator.py
@@ -3,8 +3,7 @@
 import torch
 from ase.calculators.calculator import Calculator, all_changes
 
-from orb_models.forcefield.atomic_system import (SystemConfig,
-                                                 ase_atoms_to_atom_graphs)
+from orb_models.forcefield.atomic_system import SystemConfig, ase_atoms_to_atom_graphs
 from orb_models.forcefield.graph_regressor import GraphRegressor
 
 
diff --git a/orb_models/forcefield/featurization_utilities.py b/orb_models/forcefield/featurization_utilities.py
index a90812d..7ae4e6b 100644
--- a/orb_models/forcefield/featurization_utilities.py
+++ b/orb_models/forcefield/featurization_utilities.py
@@ -4,6 +4,7 @@
 
 import numpy as np
 import torch
+
 # TODO(Mark): Make pynanoflann optional
 from pynanoflann import KDTree as NanoKDTree
 from scipy.spatial import KDTree as SciKDTree
diff --git a/orb_models/forcefield/graph_regressor.py b/orb_models/forcefield/graph_regressor.py
index 73d83d2..167523e 100644
--- a/orb_models/forcefield/graph_regressor.py
+++ b/orb_models/forcefield/graph_regressor.py
@@ -7,8 +7,7 @@
 from orb_models.forcefield import base, segment_ops
 from orb_models.forcefield.gns import _KEY, MoleculeGNS
 from orb_models.forcefield.nn_util import build_mlp
-from orb_models.forcefield.property_definitions import (PROPERTIES,
-                                                        PropertyDefinition)
+from orb_models.forcefield.property_definitions import PROPERTIES, PropertyDefinition
 from orb_models.forcefield.reference_energies import REFERENCE_ENERGIES
 
 global HAS_WARNED_FOR_TF32_MATMUL
diff --git a/orb_models/forcefield/pretrained.py b/orb_models/forcefield/pretrained.py
index f8ddced..ecb826e 100644
--- a/orb_models/forcefield/pretrained.py
+++ b/orb_models/forcefield/pretrained.py
@@ -6,8 +6,12 @@
 
 from orb_models.forcefield.featurization_utilities import get_device
 from orb_models.forcefield.gns import MoleculeGNS
-from orb_models.forcefield.graph_regressor import (EnergyHead, GraphHead,
-                                                   GraphRegressor, NodeHead)
+from orb_models.forcefield.graph_regressor import (
+    EnergyHead,
+    GraphHead,
+    GraphRegressor,
+    NodeHead,
+)
 from orb_models.forcefield.rbf import ExpNormalSmearing
 
 global HAS_MESSAGED_FOR_TF32_MATMUL