Issuance of expanded-credit mortgage-backed securities is moving at a steady pace, but deal sizes are declining and loan seasoning is increasing, suggesting a slowdown in originations. Redwood Trust is set to issue a $362.7 million deal, according to presale reports by Kroll Bond Rating Agency and Moody’s Investors Service. It’s the fourth expanded-credit MBS of the year from Redwood, including a $520.5 million issuance in May and a $417.0 million deal in July. The average seasoning ...