The sprocket needed replaced on the jackshaft of my silverfox 606 go-kart. I took the vinyl cap off one end and pushed the jackshaft through the torque converter so i could remove the torque converter to replace the sprocket. Put everything back together but the vinyl cover for the end of the jackshaft was loose and leaking what I'm assuming is oil after test driving. Is it oil and how do I seal that cap? Thanks in advance, I have some kids that I need out of my house!!