I have been trying to find a "low" award ticket in F/BE class for LAX-LIM & LIM-LAX:

• at delta.com I can find some in April but between May and January 2010 there is only "medium" awards (for 130k miles!!!)
• at nwa.com nothing shows up!!!

I find this very strange! I am used to book award tickets at least 6 months in advance so that I can get "low" award tickets. Thus it seems to me that DL is not providing any low awards for flights 60+ days in advance! I tried another South American destinations and had the same experience... Is this a new trend? Can anyone share similar (or different) experiences?