Hey guys. I just got this 1994 polaris xlt. It's been sitting for about 3 years. Cleaned up the carbs and changed chaincase oil. Cleaned out the gas tank. Took off the exhaust manifold and noticed a couple of small drops of coolant. Put it together started it and ran it for about 30 seconds. Pulled it a couple times then took the spark plugs out and I can see a couple of drops of coolant on 2 of the pistons. Anybody have any ideas what it would be? I'm thinking head gasket..