While the banks are stepping up efforts to help borrowers stay in their homes, they are still spending most of the settlement on short sales and forgiveness of home-equity loans that allow them to take bad loans off their books. Profits from new lending are increasing even as regulators enforce penalties for modification missteps and foreclosures pursued with fraudulent or missing documents. Last year, mortgage revenue at the four largest lenders — Bank of America, JPMorgan, Wells Fargo & Co. (WFC), and U.S. Bancorp –surpassed the amount they spent on consumer settlements and investor demands they buy back faulty loans.