Originators of nontraditional mortgage products need to do a better job of disclosing the risks to borrowers, a report from the government’s watchdog agency said. “Most of the [alternative mortgage product] disclosures we reviewed did not fully or effectively explain the key risks of payment shock or negative amortization for these products and lacked information on some important loan features, both because Regulation Z does not require lenders to tailor this information to these more complex products...