So I've been noticing that after about 30 minutes to an hour of driving my clutch kinda rattles. Mostly as I'm slowly releasing it from 1st gear or when I down shift to second and then let off the clutch. It vibrates/rattles. It doesn't happen when I just start to drive, mostly after I've been driving for a while. But it is a noticeable shake/rattle/vibration. Any help? I have an oil change due in 1000 miles and I'm almost inclined to take it to the dealer to check on it. But most of the time, my local dealer always shrugs off my info.