diff --git a/example/config.json b/example/config.json
index d5feaf6..8fdfa9b 100644
--- a/example/config.json
+++ b/example/config.json
@@ -11,20 +11,20 @@
   "seq_len": 128,
   "epochs": 8,
   "max_batches": 3000,
-  "lambda": 0.5,
+  "lambda": 0.8,
   "lr": 0.0005,
   "seed": 1337,
   "log_every": 10,
   "ckpt_every": 50,
   "ema_decay": 0.999,
   "use_ema": true,
-  "clip_k": 5.0,
+  "clip_k": 3.0,
   "grad_clip": 1.0,
   "use_condition": true,
   "condition_type": "file_id",
   "cond_dim": 32,
   "use_tanh_eps": true,
-  "eps_scale": 1.0,
+  "eps_scale": 0.7,
   "sample_batch_size": 8,
   "sample_seq_len": 128
 }
diff --git a/example/export_samples.py b/example/export_samples.py
index 3bfed15..016ad71 100644
--- a/example/export_samples.py
+++ b/example/export_samples.py
@@ -234,7 +234,17 @@ def main():
         out_cols = ["__cond_file_id"] + out_cols
 
     os.makedirs(os.path.dirname(args.out), exist_ok=True)
-    with open(args.out, "w", newline="", encoding="utf-8") as f:
+    out_path = args.out
+    try:
+        f = open(out_path, "w", newline="", encoding="utf-8")
+    except PermissionError:
+        # If file is locked (e.g. open in Excel), write to a new file
+        stem = Path(out_path).stem
+        suffix = Path(out_path).suffix or ".csv"
+        alt = Path(out_path).with_name(f"{stem}_new{suffix}")
+        out_path = str(alt)
+        f = open(out_path, "w", newline="", encoding="utf-8")
+    with f:
         writer = csv.DictWriter(f, fieldnames=out_cols)
         writer.writeheader()
 
@@ -263,7 +273,7 @@ def main():
                 writer.writerow(row)
                 row_index += 1
 
-    print("exported_csv", args.out)
+    print("exported_csv", out_path)
     print("rows", args.batch_size * args.seq_len)