hi guys i need to ask a question please. I have completely rebuilt my engine, ( as I dropped a valve) new pistons, valves the works. The problem is this since i fetched the car from the mechanic there has been a metal on metal noise. The car got stuck in gear twice..( which i advised him of) on one occassion about 2 weeks back i had to drive the car home from work with this noise. I have since taken the car back to him, his deduction is that my gearbox is damaged. My problem is how could he deduce this without stripping it? also, he was the one who put in the new clutch, is it possible that th