I have a 2019 Dark Horse with stage 1 exhaust and stage 1 air filter. 2300 miles. I removed the air cleaner cover and found a small amount to oil on the cover. I notice that there is a port that I guess is a crankcase breather. There was about a gram of oil on the cover. There was a little oil that have gotten on the paper filter. It was like there is a crankcase vaper from the port that accumulated on the cover. Is this normal???