Sometimes you have to take a step backward to be able to take several steps forward. And you're not being criticized for AAoA; you're being hit for (longest) history of revolving credit.
There's nothing you can do about the longest history, at least, not without a time machine. But you could definitely stand to diversify your credit profile a bit, and also protect yourself from wacko behavior by your one card.
I would advise, though, that you figure out your AAoA in years and months. The 6 years on your report might mean barely six years or almost seven. The rule of thumb is that you don't want to drop your AAoA by more than a year if you can possibly help it. To do this, figure out the age in months of ALL the accounts on your reports, whether open or closed. First figure the years and multiply by twelve to translate into months, and then add the number of months. So an account opened in January 2002 would be 7 years (=84 months) plus 3 months for a total of 87 months (almost 88.) Do that for every account, add them up, divide by the number of accounts to get the average in months, then divide again by twelve to get the average in years. That's your current AAoA. Now take the total number of months and divide by the number of accounts plus 1 (representing a new account), and divide again by 12. If you stayed at 6-something, I think you'll be helped by adding another CC, from a different bank.
The FICO High Achievers thread indicates that most of these mythical beings have about 3-4 open cards. As revolving drives your scores so strongly, it's worth a temporary hit in your AAoA to fatten the revolving portion of your credit up a bit.
At any rate, your AAoA has nothing to do with the ding about length of revolving history. And obviously, the big factors that are driving your scores are the recent late and the high util. Time will fix the first, and payments will fix the second. IMO, the "length of revolving history" bit is a far distant third in things affecting your score. Fix your util, and let the late hit one year old and then two years old, and you'll be in great shape.
Have you tried GW'ing (goodwilling) the late, btw? If you could get that off, it would do wonders.
edited for typos --attempting to post while being assaulted by a 16-pound cat who wants to be petted, NOW.
Message Edited by haulingthescoreup on 04-27-2009 08:00 PM
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007