Moody’s Investors Service and Fitch Ratings have decided that high-quality non-agency MBS don’t require 25 basis points of mortgage servicing fee, the decades-old industry standard that issuers and investors have vigorously debated in recent years. Moody’s reviewed prime-quality loan pools (not Alternative A) with varying minimum servicing fees over the past several months and determined that a servicing fee of 17.5 bps is sufficient for prime jumbo fixed-rate mortgages. The firm thinks that 20 bps…