I just went on a long (60 mile) high rpm ride. I parked my bike and went back out to the garage to grab my gps and and I noticed some oil had dripped out of my oil breather hose, as I am new to 4 strokes and this being the first real ride I have put on the bike, I am not sure if this is normal. It looked like only a few drops. I just dont want my machine blowing up on me. It is an 04 YZ450. Thanks for the help.