Sitting on my bike I smell burned oil like its dripping on the headpipe but I can't see a leak anywhere. I'm not stupid. If there was oil actually coming out I'd see it. What about the decompression plug? Would that being bad have something to do with it? I know there is a billit replacement for it and I've heard of YFZ's blowing the stock one's out. I read about this going out in one of the wr sticky threads but it says that there would be oil coming out if that was what it was. So what is it? I didn't smell it till I changed the oil. I used 20-50 Yamalube. I've been using 20-40.