I had diagnostic in gearbox garage .they say it's flywheel. So I change it for 500 pounds. It was ok for 3 months and now it's the same like it was before.but now they say it's gearbox not flywheel. its start shake when you go from first to second gear or from second to third.and sometimes gearbox don't wanna change speed.when drive in s gear its takes pressure of gearbox and it's better.