I have a 00 cr 250 i cant seem to stop from fowling plugs, as soon as you let off the gas for a minute it is fouled or if you go down a hill it fouls out you have to run it wide open all the time , but runs excellent i did put a couple size smaller main jet but didnt seem to help it blows oil out the silencer where can i find out how to jet it properly or can someone help me on this one I always run 32\1 thanks