Same here. Even with a stock clutch, I still get ocassional chatter from the gearbox. Could be a bad throwout bearing, but I doubt it since that was replaced with the clutch. I'm thoroughly satisfied with my FS flywheel. The car should have come with one of these from teh factory.I have the FS 9lb flywheel. The greatest bennefit is a much quicker, peppier revving engine. The car is alot "zippier" and easier to drive. It doesn't hang onto the revs as much. (TB will also help this combined with the flywheel) My only complaint with it is that at an idle, the transmission makes horrendous noises. (even worse with the A/C on) Deff. worth the money!