I have a 2000 c70 with the b5234t motor in it and i let a friend replace the timing belt .....yea big mistake all valves got bent and a few guides to i am confident in my work and just need to know how to get the old ones out .........also i would like to know what size valves go in this head stock the dealership is telling me 6mm for intake and 7mm for exhaust but i pulled both intake and exhaust and they are both 6mm please help