I just installed a clutch master dual friction clutch and lightweight flywheel. I was finally able to test drive the car since the rebuild and I noticed that there is a vibrating or somewhat of a chattering noise coming from under the car only when the clutch is pressed in. In neutral or any gears it is fine. Was there anything else I was suposed to do besides install the clutch and flywheel. I aslo replaced the pilot bearing and was sure to follow the book on all torque specs. Can someone please help?