I'm trying to get the hubs off of that Marmon-Herrington axle I got the other day. I have the knob off, the 8 hub bolts, the spring and the splined hub connector. How in the heck am I supposed to get the hub body out of the wheel hub. The hub body is aluminum and the wheel hub is steel. I think they corroded together or something because I have whacked on it a good bit and it won't budge. Am I missing something here?