I would try GW letters to the original lender, if you haven't already. If you have tried that with no success, just keep at it. As a lot of people here have experienced, it only takes one yes to get something removed - and sometimes that yes comes after 20 no's!
My issue is that both the new and old lenders are reporting the five years that the original lender owned it, which includes one 30-day late payment. I wrote to the new lender about it and they say they're reporting correctly, which is fine - I probably did pay late. I'm debating whether it's worth it to dispute the original TL, though - while it would probably be successful, I doubt that one 30-day late almost six years ago is making any difference to my score. It's the only negative item on my CR, though, so it bothers me that it's reported more than once.
