That is interesting and makes a lot of sense. All the bolts are pretty rusted and definitely could be stuck to the manifold. I don't see any indication that someone tried to wrench on them previously but someone must have unless these manifold bolts/studs can possibly break on their own from age. I'll put some Blaster on them, let them sit and see what gives. Hopefully something will. Weather was great today, had to work. Off tomorrow but weather is supposed to stink. Figures.