Bruce,

You may have already seen this on the Outback Users Forum, in the thread titled,
"How do I use every last electron?" 

http://www.outbackpower.com/forum/viewtopic.php?f=29&t=2865

Most of the discussion applies to the FX60 & FX80, but I think there were some
tips for the MX60 as well.

Dick Ratico
Solarwind Electric
Bradford, VT