First, my bike has been sitting for about 5 months without even being started. So last night i finally get it out and get it running. Right away, i noticed that a small amount of water/coolant had leaked out of the weap hole. I stoppped the bike and wiped it dry to be sure that was were it was leaking for. I started it up again and it wasnt leaking anymore, took it around the block and it still wasnt leaking anymore. Why did it leak real quick when it started up for the first time???