Manifolds

I am having a hell of a time getting my manifolds off, i gave up today cause i was getting too worked up. Im positive i have all the nuts off, i have 12 and the manifold connector bolts out and the damn things hardly wiggle and ive been beating on em for a while. Looking for suggestions or a solution. Got frustrated and jacked a screwdriver in there to separate from the head haha so it has to cone off now.

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