Hi i own a firecat but a couple of my buddies have zr 500s both 02s on their trip to Canada they both melted down a cylender they were saying something about the rings snagging th ports or something along the lines of that. IT happend in the same side and everything. Is there a recal or an update for the cylenders for the zr 500 carbs? Why would this happen and why on the same trip? Why on the same side? i cant think of anything.