I agree that the award engine is less than outstanding. Keep in mind you are looking for an award ticket 2-3 months out during the busiest travel time of the year. You may get lucky as you get closer to your travel dates. Sometimes low level shows up one or two weeks out.

Remember that many people are booking 8-10 months out, so getting low level this close to travel dates is problematic at best. Good luck and keep on trying.