It's killing me, I HATE rattles! It happens at idle intermittently, not always, just here and there, warm or cold. It sounds like the heat shield of a cat rattling from underneath the cockpit, however there is no cat or heat shield there. If I blip the throttle even just slightly it goes away, sometimes for "good" (meaning until I go), sometimes I have to hit it a couple times. It also happens just the slightest bit as I start to take off, when the clutch is almost 100% at the top. Something is rattling, I need to find it and fix it...STAT! Any ideas fellas?