Hey guys this is my first topend teardown on my 2000 YZ250 and could use some pointers. First questions, how to i remove the push rod under the power valve housing? It looks like i should be able to just remove the bolt that holds the top link but it's very tight. Second qustion, do i need to remove the radiator to pull the cylider? First concern: When i removed the cylinder head, i noticed some coolant on top of the piston. The coolant was confirmed when i pulled the exhaust off of the cylider and it coolant ran out. Is this caused by a bad cylinder head gasket? Should i not worry about it since im replacing the topend? Second concern: When i pulled the spark plug, it was wet with fuel and black. The clamp on the carb to airbox hose was loose. Are these related? Do i need to pull the carb? Thanks for any help fellas.