Hey all, I bought a 2006 yz450f around the beggining of summer. I had a mechanic change the oil when I first got it and we ran into a problem where oil was spraying out of the front case. After letting some oil out it wasn't as bad and it eventually stopped. I changed the oil and oil filter myself today and when I finished I put in 1 quart of oil. After getting the bike started I noticed a stream of oil running out the top of the case and dripping to the ground. What could be the problem?