I have a 95 z with lt1. My water pump went out and leaked all over the opti......You know the rest. I am taking it apart and the underdrive pulley is in the way of taking out the optispark. I have got a pulley puller but when it gets so tight it just want turn any more. (also I did take the center bolt out that connects the pulley to the hub). What the hell should I do? I there something that I am missing?