Not sure there is a problem - but your backorder times are exactly two hours off from Namejet's - Might want to check it. Your times are two hours BEHIND theirs ...
The closing time could be different for each backorder provider, but the drop time for the TLD should be the same for everyone. Perhaps other providers stop taking backorder requests a little earlier.
Shouldn't Dynadot have a really good chance to catch domains dropping here ? Lost one yesterday to DropCatch.com (Namebright) that was expiring here ... It had previously been won by someone else in the auctions as well - I'm assuming they didn't pay for it. Well I would have ;)