LOL ziggy - I guess my little saga is good for something after all.
To Paul - hey cool that you disputed those off. Actually, depending on the type of federally-backed loan and who the negative tradelines are from, the default status is supposed to be removed after rehab. You can look up my previous threads to read my experience with this and how I found out the hard way about exceptions to the rules and how I dealt with them. I didn't dispute any of my negatives off through the CRA's - I dealt directly with the furnishers of info in every case.
I can't tell you if disputing with EX will work or not. What type of loans were these originally (private or federally-backed)? If federally-backed, what type (FFELP/Stafford or Perkins)? Who is reporting the negative info on EX for you - original lender, guarantor, CA?? The furnisher of info may or may not be required by law to remove the default status if these were federally-backed loans. Or, since you already had success with disputes with EQ and TU, you can try it with EX and let us know what happens. Always great to add experiences with different methods to the knowledge base.