With signs of a slowdown in subprime MBS production on the horizon, originator issuers are taking steps to shore up their secondary market and funding strategies. There’s no question that flexibility has become the watchword for many large subprime lenders. Recent months have seen such major players as Ameriquest Mortgage diversifying their exit strategies, mixing whole loan sales with dedicated shelves designed to handle “off-the-run” or investor-specific collateral.