Hello . I have an issue with my focus 1.8 16v IB5 gearbox. When i put on first and release the clutch there's a strange rattling noise from the gearbox in the early RPM. After 1500 it's gone and when i put in second it shows again around 1000-1500 RPM and disappears. Theres no problem with upper gears or when cruising or pushing it to the limit. It's like a diesel rattle when i go and when i push the pedal it's gone. So i'm curious what could that be? Can you help me ?