SLRO is a waste of time...period. You owe $31K. Rehab would be $310 per month for 9 months or as stated under the Higher Education Act "reasonable and affordable" payments based on your income. Your loan would come out of default and would then be current. If CBE refuses you reasonable and affordable payments, you have grounds to file a complaint with the Student Loan Ombudsman and they will intervene for you. You must specifically ask for rehab and use the phrase "I am entitled to reasonable and affordable payments under the HEA."
OR..simply consolidate yor loan with the Direct Loan Program thru the US Depatment of Education. Since you are in default, you would be assigned to the Income Contingent Repayment Plan...
All of this is public information on student loan websites all off the net. SLRO will charge you big bucks to send you a consolidation app. GET YOUR REFUND ASAP!!!!!
There are links on consolidation and rehab inthe sticky section!!