My 04' 450 is spitting oil out of the front of the cylinder where i guess a manual decompression thing would go. But seing as these are auto-decompressing bikes, I don't know what to do to fix the problem. Is there supposed to be a bolt or something in there to keep this from happening? It spits oil directly onto the radiotor and is constantly smoking from the oil that gets on the exhaust. It's not a whole lot of oil, but enough to annoy me and make my YZ look BoBo when I fire it up. Please help!