Have a 25hp kawasaki on a Wright Sentar, it has 250 hrs on it and it started leaking oil while it is running. I cleaned it up and seen it was coming from the oil fill tube, so I removed it and put on a new o-ring. Ran it a few minutes and seen it is still leaking there and also all around the engine oil seems to be coming out all around the engine. It's like there is too much pressure. Any ideas ?