I have an 02 lancer oz rally. It had a stage 3 clutch installed. Before the install it was fine. Now it grinds 2nd. Unless you let your rpm drop and slide it in. When I let off the clutch in neutral it makes a slight knocking noise. I was thinking either the slave has air or the clutch was not installed right. Or the flywheel wheel was not surfaced or replaced. Need help!! Thank you