Having worn down Barack Obama in one dispute this week, Republican operatives are helping John McCain hit other targets, sometimes without waiting for his cue. Republican activists see the aggressive efforts as a way to help McCain’s presidential campaign – which some regard as less nimble and opportunistic than it should be – compete with Obama’s superior fundraising and well-regarded national organization. To be sure, Democratic surrogates are helping Obama, their party’s presumed nominee. But Republican activists scored the bigger win this week when they forced a top Obama adviser to step down. They are vowing to use it as a blueprint to hammer Obama on other issues….