[Rich Biebel]

Sean I just went back and re-read all your posts on this machine and it is a real mystery. It really should not have bad heads as that problem rarely occurs with less than 1200-1500 hours, I don't think I've ever seen it on a machine with less....

Pop the valve covers.....unfortunately you will need new gaskets as they are paper thin and stick and are nearly impossible to reuse.

Just to get a look around the exhaust valves and springs. You can remove the spark plugs and try to bump it over to see if it has some lash. Mostly all your looking for is signs of overheating on the exhaust valve and spring. They can really get roasted....If it's clean.....then I would say with so few hours the heads are fine.....and it's back to scratching our heads....