This quiet trim shows how income-focused portfolios are adjusting as credit, leverage, and volatility collide.On November 13, Dallas-based McGowan Group Asset Management, Inc. disclosed a sale of 319,882 shares of the DoubleLine Income Solutions Fund (DSL +0.44%) (DSL), reducing its position by approximately $3.93 million.What HappenedAccording to a filing with the Securities and Exchange Commission dated November 13, McGowan Group Asset Management, Inc. sold 319,882 shares of the DoubleLine Income Solution ...