diff --git a/beem/blockchain.py b/beem/blockchain.py
index 49101453043d85b9db9a683b4d8f34c49baefb37..319a78602055e9e375489c04c2234056876418a0 100644
--- a/beem/blockchain.py
+++ b/beem/blockchain.py
@@ -180,7 +180,7 @@ class Blockchain(object):
             else:
                 head_block = self.get_current_block_num()
             if threading and FUTURES_MODULE:
-                pool = ThreadPoolExecutor(2)
+                pool = ThreadPoolExecutor()
                 latest_block = 0
                 for blocknum in range(start, head_block + 1, thread_num):
                     futures = []
diff --git a/beemgrapheneapi/graphenerpc.py b/beemgrapheneapi/graphenerpc.py
index bc31d0a42bfd1ac8325b0012d2032d3e9a220968..d08a5e6fab893ba0537114a6678420d9b0c84f31 100644
--- a/beemgrapheneapi/graphenerpc.py
+++ b/beemgrapheneapi/graphenerpc.py
@@ -217,7 +217,6 @@ class GrapheneRPC(object):
             except KeyboardInterrupt:
                 raise
             except Exception as e:
-                print("error "+str(e))
                 log.critical("Error: {}n\n".format(str(e)))
                 sleep_and_check_retries(self.num_retries, cnt, self.url)
                 # retry
diff --git a/examples/benchmark_beem.py b/examples/benchmark_beem.py
index 84b63f9ecd5b02e9d2262d1a87468bceee98f485..ff1726ea392c4a4965e06e7c1169233f4c1cc553 100644
--- a/examples/benchmark_beem.py
+++ b/examples/benchmark_beem.py
@@ -17,33 +17,33 @@ logging.basicConfig(level=logging.INFO)
 
 
 if __name__ == "__main__":
-    node_setup = 2
+    node_setup = 3
     how_many_hours = 1
     if node_setup == 0:
         stm = Steem(node="https://api.steemit.com", num_retries=10)
-        max_batch_size=None
-        threading=True
-        thread_num=8
+        max_batch_size = None
+        threading = True
+        thread_num = 8
     elif node_setup == 1:
         stm = Steem(node="https://api.steemitstage.com", num_retries=10)
-        max_batch_size=16
-        threading=False
-        thread_num=8
+        max_batch_size = None
+        threading = False
+        thread_num = 8
     elif node_setup == 2:
         stm = Steem(node="https://api.steemitstage.com", num_retries=10)
-        max_batch_size=None
-        threading=True
-        thread_num=8
-    elif node_setup == 3:        
+        max_batch_size = None
+        threading = True
+        thread_num = 8
+    elif node_setup == 3:
         stm = Steem(num_retries=10)
-        max_batch_size=None
-        threading=True
-        thread_num=8        
+        max_batch_size = None
+        threading = True
+        thread_num = 16
     blockchain = Blockchain(steem_instance=stm)
     last_block_id = 19273700
     last_block = Block(last_block_id, steem_instance=stm)
     startTime = datetime.now()
-    
+
     stopTime = last_block.time() + timedelta(seconds=how_many_hours * 60 * 60)
     ltime = time.time()
     cnt = 0