BOSTON - The federal judge in Massachusetts overseeing the multidistrict litigation for lawsuits stemming from Bank of America N.A.'s alleged mishandling of loan modification requests pursuant to the Home Affordable Modification Program (HAMP) on Sept. 4 refused to certify 26 classes for borrowers, finding that individual issues pertaining to each class member's performance required by a trial period plan (TPP) predominated over classwide issues (In re: Bank of America Home Affordable Modification Program $(HAMP$) Contract Litigation, MDL No. 2193, Case No. 10-md-2193, D. Mass.).