GenStone Acquisition Co. is making its first foray into the mortgage industry by buying Washtenaw Mortgage of Ann Arbor, MI. The lender’s new mission will be to serve the subprime markets. The deal begins with GenStone making an immediate cash injection to Washtenaw of $1.6 million, said GenStone CEO Rich Coleman, which will buy nearly 57 percent of the lender’s outstanding shares. Then by February next year, GenStone will buy...