OLDWICK, N.J.--(BUSINESS WIRE)--A.M. Best has revised the outlook to negative from stable and affirmed the financial strength rating of A- (Excellent) and the issuer credit rating of “a-” of Millers Capital Insurance Company (Millers Capital) (Harrisburg, PA). The ratings reflect Millers Capital’s excellent risk-adjusted capitalization, historically profitable operating earnings driven primarily by investment income, and long-standing regional market presence. Partially offsetting these positiv