OK did you drive it with the EGR connector unhooked and no difference? The reason I suggest a .045 gap is I was thinking your spec was .045 and not .060, but also because sometimes .060 is too much and gives problems. If the spec calls for .060, use that or tighten it up to .055 or so. Is this hesitation you are getting kind of jerky feeling (most likely ignition) or is it more like the engine just flattening out (most likely fuel injection related)?