Guys, I did the YZ timing mod and the bike runs great, however, I noticed a few drops of oil from the valve cover vent line the next morning after I ran the bike with the YZ timing around the block. Now, I started the bike, first kick, and I put my hand under the vent line (underneath the bike) and it is pulsating air. When you rev the bike in neutral it does not pulsate air any more. Is this normal?? What about the drops of oil? I never had those before the YZ timing change. Can you tell me if air pulsates our of your vent tube in neutral. Thanks in advance for any feedback.