When I step on clutch pedal, it makes an ugly creeching sound, it can be felt on the pedal, this happened after driving it very hard, mileage is 90,000km, gears don't grind, still smooth operation, I already put grease on the end of the slave cylinder, still the same. Only happens as soon as the engine warms up. When holding finger on the slave cylinder, the roughness can be felt on the slave cylinder. Clutch not slipping. What would the cost be to have it sorted. Thanks