I was changing my passenger side exhaust manifold gasket tonight, using a felpro gasket. The problem is it looks like there is too much space between the gasket and the head/header. Maybe Im just being an idiot, but shouldnt it tighten all the way? I tightened the 8 bolts as much as possible, and it still sounds ticky. Is it possible that the header is not seated properly or something? thanks.