Hello all, I am finally finding time to push forward with replacing my exhaust. I am removing the manifolds to have them milled, as well as to gain access to a sheared off exhaust pipe stud. That being said, I have removed the carb, EGR and Gulp valve. I have also removed the 4 nuts that hold the manifolds on to the block. In the picture I have circled two of them. Should this thing pull right off? I don't know how long it has been since it was last off the block, but I am having trouble getting it off and have only used a rubber mallet to whack it a few times to try and free it up. No luck. any suggestions? I am so close to getting this thing off and being able to drive this rig!