Hey folks, long story short, rebuilt my wife's ZRT last year, ran it for a day before it lost spark. Well, decided to start tearing into it last weekend. Unfortunately, found that the mag side cylinder is leaking coolant around the head. Motor has less than 100 miles on a fresh rebuild. I've rebuilt countless motors, so I knew what I was doing. That's not to say the o ring didn't get pinched, but it never leaked a drop during the ride I took with it, So I'm kinda leaning against that possibility? Either way, the head will be pulled, and am tempted to pull all three. My question is is there any aftermarket manufacturer that sells JUST the head o rings? Or am I stuck paying OEM prices and/ or buying a whole top end gasket kit? I'd rather not do either, because I have many other things that I could use the $60+ towards... I've done some searching and haven't come up with anything besides OEM. I plan on checking flatness of the heads and cylinders while in there, and if not flat, I'll throw them on my mill at work and make them flat!! Any info would be great!! Thanks!