last week or so I've noticed a rattle from my saff 4x4's gearbox.It goes when you put your foot ont he clutch,so I reckon it's clutch release bearing or lay shaft bearing,thing is, it had a gearbox rebuild and new clutch by a ford main dealer about 4 months ago.The car is completely standard and is not driven hard,so is it normal for these parts to be wearing so quickly or have I had a bodge job done?