First of all I'm a four-Stroke newb. Got the bike with a leaky clutch cover gasket and replaced it. I Filled the oil level to half of the sight glass. after riding it the oil level was at the top of the sight glass and some had seeped from the fill cap. I drained until the oil was at the bottom of the sight glass and rode it again only to find the same thing. Can someone help this idiot?