diff --git a/conf/finaldata/dexorder-finaldata.toml b/conf/finaldata/dexorder-finaldata.toml
index be0d742..7e905c1 100644
--- a/conf/finaldata/dexorder-finaldata.toml
+++ b/conf/finaldata/dexorder-finaldata.toml
@@ -3,3 +3,4 @@ ws_url = ''
 redis_url = ''
 ohlc_dir = '/ohlc'
 walker_flush_interval=25
+concurrent_rpc_connections=9999
diff --git a/src/dexorder/final_ohlc.py b/src/dexorder/final_ohlc.py
index f735c4d..cebf552 100644
--- a/src/dexorder/final_ohlc.py
+++ b/src/dexorder/final_ohlc.py
@@ -24,14 +24,14 @@ class OHLCFilePath:
         self.period = period
         name = period_name(period)
         self.filepath = f'{symbol}/{name}/'
-        if period < timedelta(minutes=15):
+        if period < timedelta(hours=1):
             # one file per day is the smallest resolution
             # log.debug(f'{name} is daily')
             self.start = start = datetime(time.year, time.month, time.day, tzinfo=timezone.utc)
             self.end = self.start + timedelta(days=1)
             self.file_interval = timedelta(days=1)
             self.filepath += f'{start.year}/{start.month}/{symbol}-{name}-{start:%Y%m%d}.csv'
-        elif period < timedelta(hours=8):
+        elif period < timedelta(days=1):
             # one file per month
             # log.debug(f'{name} is monthly')
             self.start = start = datetime(time.year, time.month, 1, tzinfo=timezone.utc)
@@ -324,10 +324,10 @@ class OHLCFileSeries:
         # flush quote file
         #
         try:
-            start_of_column = self.quote_file.tell()
             if self.start_time_bytes:
                 self.quote_file.write(self.start_time_bytes)
                 self.start_time_bytes = None
+            start_of_column = self.quote_file.tell()
             self.quote_file.write(f'{ts},{price:f}\n'.encode('ascii'))
             self.quote_file.truncate()
             self.quote_file.flush()
diff --git a/src/dexorder/ohlc.py b/src/dexorder/ohlc.py
index aff0cee..cd0f877 100644
--- a/src/dexorder/ohlc.py
+++ b/src/dexorder/ohlc.py
@@ -34,7 +34,8 @@ OHLC_PERIODS = [
     timedelta(days=1), timedelta(days=2), timedelta(days=3), timedelta(days=7)
 ]
 
-OHLC_DATE_ROOT = datetime(2009, 1, 4, tzinfo=timezone.utc)  # Sunday before Bitcoin Genesis
+# Sunday before Bitcoin Genesis. Timestamp: 1231027200
+OHLC_DATE_ROOT = datetime(2009, 1, 4, tzinfo=timezone.utc)
 
 # OHLC's are stored as [timestamp, open, high, low, close] with prices as string values.  If there was no data during
 # the interval, then open, high, and low are None but the close value is carried over from the previous interval.