Scratching noise when the clutch is released, goes away when clutch pedal is engaged, happens in all gears (same noise but louder when driving slow in 1st,2nd and 3rd), all gears shift perfectly, i thought it might be the throwout bearing but i watched a video and its a totally different sound, it has 207000ks, new clutch, machined flywheel, new driveshaft seals and new gear oil at 199446ks, please help, thanks.