If you torqued that aluminum flywheel down wrong you probably warped it. That pressure plate is pretty hard to bend but you may have bent that too. You should take it back out and have the flywheel checked. Make sure everything is not bent. Sounds to me like you ruined that flywheel though. Aluminum flywheels sucks. They are prone to warpage. Chromoly is what the factory uses. Spoon has a 9lb chromoly flywheel but it's pretty expensive. You don't wanna go too light anyways cuz you lose way more bottom end than the free-revving is even worth.