I have been trying to get the timing gear off the end of the cam for too long now. According to the shop manual it should slide off and is keyed, not pressed on. It shows using a pry bar, which I have done and really pulled hard. I have used all the lubes and it won't budge. The gear is tight to the cam retainer so I can't get a puller in there. Anybody have this happen to them or have any ideas? The engine is a 1957 292 ford. Any help would be really appreciated!  Ed