I have a couple cheap Harbor Freight pry bars (had them for about four decades) that fit perfectly for easy separation. Wooden wedges would have worked too. But, with no corresponding marks on the jugs, I suspect either jugs or heads (or both) are not original. Not the only ham-fisted damage on it. Also had many gaskets replaced with Hi-temp RTV that squeezed out into the oil system, cylinder base bolt stripped completely from the case and just stuffed back in. One of the fork caps cross-threaded in. Head studs half-inserted because the Helicoiled holes in the jugs were never cleared of swarf. plug hole stripped to half-way down (luckily a deep-reach plug). And, the engine had about a quart of water under the oil in the sump. But it ran! And, it will run again when I finish.
