All right, ALL of the bolts below the head cover are stuck. The camshaft bolts will break or destroy my wrench before I can remove them. The biggest worry I have is some 5 millimeter Allen bolts that attach my oil pipes to my engine that I am rounding out just trying to unscrew. I CANNOT afford to break these, for these are unique bolts. So no breaking or drilling is possible. These can withstand me leaning on my L-wrench with all my weight, and the metal will give first. I have tried Liquid Wrench, WD-40, pounding on it with a hammer, it is not reverse-threaded, butane torch, and trying to tighten it. Any good ideas here?