SPOKANE, Wash. -- The Roman Catholic Diocese of Spokane has reached agreements with two more insurance carriers on payments to cover sexual abuse claims as the diocese's bankruptcy case heads into mediation. In a statement issued late Thursday, Bishop William S. Skylstad said CNA Insurance had agreed to pay $3.5 million and the Washington Insurance Guaranty Association, which took over the policies of defunct Home Indemnity Co., $999,999.99. Counting interest, Skylstad said in the statement, the settlements boost the total to more than $20 million from six insurance companies to help settle claims of sexual abuse by priests that led the diocese to file for Chapter 11 bankruptcy protection in December 2004. A one-day mediation session was scheduled Friday before U.S.