Am finding no opening mid August MIA-BOS but know from previous experience going back & forth on 7-day search can cause a day to go from 0 to 7 to 0 to 7 seats available. Phone reps have same problem & it has nothing to do with seats being gobbled up or evacuated.

Am using:
https://www.britishairways.com/trave...n_type=STD_RED

Is there more reliable way to search Avios availability?
(must come up here over & over, a link to earlier thread?)
Thanks in advance!