The latest prime non-agency mortgage-backed security from Flagstar Bank will differ somewhat from two similar deals issued by the bank this year, according to presale reports released this week. The share of mortgages subject to due diligence was adjusted and there will be a higher share of mortgages in the deal that are eligible for sale to the government-sponsored enterprises. The pending $466.93 million Flagstar Mortgage Trust 2018-4 follows deals from the bank that closed in ...