 Investment manager Donald Netter, who has battled First Trust High Income LongShort Fund FSD for years, is urging shareholders to fire the investment adviser at this years annual meeting, saying its returns are too low and fees too high. Netter, whose Dolphin Limited Partnership I LP owns shares of FSD, filed a shareholder proposal with regulators on Thursday and is now soliciting votes before the March 9 annual meeting. Five months ago Netter stepped up his battle with FSD by asking the closed-end fund to restructure or give investors their money back after it had traded at a discount for years. 