So it all started with me changing my timing belt. after replacing the timing belt and being the dumbass that I am I goodentightened it instead of torqueing the crank pulley bolt. Needless to say the pulled came loose and broke off my wood key and rounded the crank sprocket. I took it upon myself to order a Perrin lightweight pulley since I was getting back in there anyway. Anyway long story short I cant seem to get the sprocket off with just pb blaster and a pry bar. Any suggestions? I've heard using a certain puller tool and tapping the holes on the front of the sprocket to remove it but I just wanted to be sure.