If this has been covered previously, don't flame me - search is not working right now.

At the end of June, I am returning from BVI on an award ticket. The first leg from EIS to SJU was originally booked on the 8:00AM flight. I wanted to book the later one at 10:20, but it was not available, and my request was turned down by yield management. Recently the 8:00AM was re-scheduled to a 7:40 departure, which is even worse for me. I'd like to re-request the later flight since AA changed the departure time.

Has anyone changed an award flight due to an AA schedule change, and are there any winning tactics? I realize that 20 minutes earlier isn't a huge deal, but I'm hoping for any edge to book the later one. Our connection at SJU is after 12:00. The 10:20 departure is the only one without award availability that day.