Has anyone else experienced a "miss" with their 15 hp Kawasaki twin. It seems like every so often, we'll get one that seems to develop a slight misfire. It usually passes within a few minutes - but I have seen it last for 10 -15 minutes. It seems like either an ignition problem or a fuel delivery problem. We tried putting a higher temp spark plug in them and that seemed to work for a while (thought we had it solved - but then we starting seeing the problem again last week - may have been heat related as it was above 95 every day). Please share any similar experiences with me / possible rememedies. I'm a pretty damm good mechanic - but before I really delve into this one, I'd like to get some other input/experience (in case this is a common prob that I haven't heard of). Thanks in advance to all my buds in the mechanic forum.