has anyone out there experienced problems with the clutch? 1.8 manual 'shudders' when downshifted/upshifted to 3rd. checked FAQ's but nothing similiar. what the hell could this be! dealer doesn't have parts for a 99 clutch..1 week wait and not much confidence they have an idea what's causing it(ie. replacing the clutch will even fix the problem). any advice appreciated.