(January 24, 2017, 10:08 AM EST) -- WEST PALM BEACH, Fla. — A declaratory judgment lawsuit filed by a contractor’s insurer against excess insurers over denied additional insured coverage for a construction defects claim fails because the insurer failed to allege that its coverage had been exhausted, a Florida federal judge ruled Jan. 20 (Zurich American Insurance Co. v. Amerisure Insurance Co., et al., No. 16-81393, S.D. Fla.; 2017 U.S. Dist. LEXIS 8366)....