hey guys, picked up a new 2011 zx10 and just did the 600 mile service, but i noticed around 250 miles i started hearing a pretty loud rattle noise, it sounds like the timing chain, it only does it between 4-5 thousand RPMs anything over that i dont hear it. Is this a normal kawi noise, or is it something i should have checked out? Does anybody else's bike make a rattle like this? Ive aslo noticed that it has a very small amount of oil leaking from the vent tube that runs down the left side of the fairing that has the little clear bulb looking thing in line. Im not sure but i think it goes up to the air box, is oil leaking from this tube normal? Thanks for all your help guys.