Greater Yamaha 61x head

Ok I don't know if I have been misinformed or what is going on. I have a greater head on my 61x engine. I purchased this engine about 2 months. It has not run correct sense I have owned it. It was running way to rich. I have been trying to get it running better but I keep getting water in my cylinders. So I took the head off to inspect the orings. They were completely trash. Melted and cut in several places. The guy I got the engine from said he just installed them and they were blowsion head orings. So I ordered new blowsion oring and tried to install them. The outer oring installed fine the dome oring seems way to big. Not diameter. The thickness of the Oring seems way to big. Does anyone know if greater come out with different sizes?
 
Location
Ohio
I have the same head...it has been rock solid at 195psi for years and years....

Stock up on bunch of it once we figure out what it is.

I have a bunch but I don't know what is what...it is all mixed together. I only can tell when the head is off.

He could have given you a fine motor and just 1 over heat can melt them but no biggie.....just replace and rip!
 
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