Buckhorn

Thanks heaps, got some stuff to try there. Much appreciated!

Not 2nd Gen but uncannily I have the same intermittent misfire on my 1st Gen. I have narrowed it down to the rear right cylinder, when I take the lead off the plug, problem goes away. I have, Replaced the plug>no change Swapped out plug caps to narrow out the plug cap>no change What should I do next? Could it be the coil? How do I check it or as RSTDdog suggests, should I be looking for a fuel problem?? Any help would be greatly appreciated!!!