I have noticed the cylinder head is leaking at the gasket and I am wondering about the next move to make. After noticing the leak, I also noticed that it wasn´t riding well, needing the choke to stay on after warming up and the engine cutting out at the stop light. Is this related to the cylinder head or do I have another issue such as needing a carb rebuild? Have I done more damage to the engine while riding with a leaky cylinder head gasket? Thanks in advance