NEW YORK (Reuters) - Bank of America Corp and JPMorgan Chase & Co have started modifying tens of thousands of mortgages where the banks deem the loans especially risky, even if the borrowers have not asked, the New York Times reported on Sunday. (http://feeds.feedburner.com/~ff/reuters/topNews?d=yIl2AUoC8zA) (http://feeds.feedburner.com/~ff/reuters/topNews?i=KcEmcSmwtu0:uf9qyLaHYvM:V_sGLiPBpWU) (http://feeds.feedburner.com/~ff/reuters/topNews?i=KcEmcSmwtu0:uf9qyLaHYvM:-BTjWOF_DHI) (http://feeds.feedburner.com/~r/reuters/topNews/~4/KcEmcSmwtu0)