(June 21, 2016, 12:34 PM EDT) -- BALTIMORE — An insurer claims in a June 13 complaint that it is responsible only for a portion of a $4 million judgment entered against its insureds in an underlying suit alleging injuries as a result of exposure to lead paint in the insureds’ rental property (Pennsylvania National Mutual Casualty Insurance Co. v. Stewart J. Levitas et al., No. 16-2060, D. Md.)....