In my attempt to remove the timing cover, I am having issues removing the crankshaft pulley. I am able to get the 15/16 socket on, but can't get the bolt off because the pulley keeps turning. Is there a secret or easy way to get the bolt off or stop the pulley from turning? Also, once the bolt is off, does the pulley easily come loose or will I need a pulley tool to get it off? 68 Firebird 400 Jay