Hello, I recently noticed that my idle is going high(slightly) and then lower, what I would call a hunting idle. I have a NT China carb and the 66cc engine is stock. My first thought was an air leak but then thought that an air leak would cause only high idle is this true? I took off the air filter to look at the slide as this was happening to see if there was any movement but there wasn’t so I could rule out the throttle cable I think. I was able to stall the motor with carb spray around the exhaust side of the base cylinder gasket but it’s so close to the case gasket I don’t know which it could be. Any ideas on where to go from here would be great thanks.