You and me both!!!!
I've sent a couple dozen GWs to remove several lates and a repo reference on a redeemed and paid note from 2005. They always send the same reply that they are accurately reporting. Though recently they have responded that I had x number of lates. My CR reflects more. Maybe I could pursue that route. I've also sent letters to the Pres/VPs/Chairman of the Board, etc. in addition to trying out PFB. I've also faxed and called in my GWs.
If you are having a rough time with your sole 30, then I have a super long shot. Wanna share contact info?
BTW, the 30 no longer negatively impacts your score.