Ok, i just recently replaced my old t-5 with a new z spec t-5, put in a new king cobra clutch, resurfaced the flywheel, and replaced the pilot bearing. Now, from around 2000 to 3000 rpms i get a horrible vibration. i parked the car and tried revving in in nuetral, and it does it with the clutch in or out. Now when im driving down the road in 4th gear at around 2500 rpms and the vibration is terrible, i can let the clutch out and give the engine a little rev and let it back in and the vibration sometimes completely goes away. Does anyone have any idea what this might be? Bad pilot bearing?