I'm attempting to replace my timing belt and balancer belt. However, i am unable to get the main drive pulley bolt off, it is a bitch. I've tried extending the leverage of my ratchet by attatching a pipe to the end of it, had a couple other people try the same thing and even used a weak inpact wrench. Does anyone know a trick? do i need a more powerful inpact wrench? help please! Thanks