2003 with1500 miles. it started making a rattle at 900 miles and only seems to do it between 2200-3500 rpm. it is more noticeable when it's cold.the suzuki mechanic told me the 2003 has the new hydrolic assisted rachet type cam chain tensioner,and that it would get quieter after it rachets.my warranty is running out fast! does this sound right?is anybody else having this problem?