Cisco Switching/Routing :: Nexus 2248 / Port-Channels On N2K Not Load Balancing?

I have a dual-homed fabric (Nexus 2248 dual attached to two Nexus 5020's via vPC).  On this Nexus 2248 is a server that has a four port LACP etherchannel.  The ports do not appear to be load balancing correctly.  The output below shows the four ports in use and it clearly shows port e138/1/10 as getting the most use.  When I use the "show port-channel load-balance forwarding-path..." command on either of the vPC switches for various source and destination IP's that use this link, it shows them correctly load-balancing across the four ports.  But we do not see this when looking at stats on both the server side and the switch side. 
 
dc5020-3g# sh int e138/1/10,e138/1/12,e138/1/14,e138/1/16 | i seconds
  30 seconds input rate 552 bits/sec, 69 bytes/sec, 0 packets/sec
  30 seconds output rate 130120 bits/sec, 16265 bytes/sec, 161 packets/sec
  Load-Interval #2: 5 minute (300 seconds)
  30 seconds input rate 40 bits/sec, 5 bytes/sec, 0 packets/sec

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**************** Config info below.  This is a vPC pair and the port configs are identical on both switches so I'm only showing the configs for one switch to keep it simple.
 
dc5020-3g# sh port-channel load-balance
 Port Channel Load-Balancing Configuration:
System: source-dest-ip
 Port Channel Load-Balancing Addresses Used Per-Protocol:
Non-IP: source-dest-mac
IP: source-dest-ip source-dest-mac

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