what are the origional jet settings for a stock 400ex starting if you turn themmm all the way in and your losening the jets. can any one help me?? my 400 ex is stock and i put a carb that is jetted to an aftermarket exaust and i just blew my gaskets i think... because oil keeps on spitting out as i crank it.. so i need the next step so i can get my 400ex going do i buy a complete gasket kit to replace?? it lost alot of torke and i think this is why