For whatever you deem it's worth, one piece of advice I have is to check with AirlineApps.com helpdesk if you are unsure or unclear about what Delta wants you to fix. My fix-it e-mail was not very clear to me right away and I actually e-mailed the AirlineApps.com helpdesk and that's who explained what was wrong. Now, does that mean it's exactly what Delta wanted fixing? Maybe not, but in this case it turned out it was. Just an idea for you guys to try.