Need help ASAP

I am trying to remove and replace the universal type joint behind the front wheel hub. The joint wont compress a bit. Tried PB blaster, then C-clamp with breaker bar until the clamp was flexing really bad. hammered a bit as well. Any suggestions?

1997 Dodge Ram 1500 4WD 5.2L

Well, I got it done finally. It wouldnt press out at all. Broke two heavy duty C-clamps in the process of trying. Wouldnt move even a little that way. What worked was pure anger and a hammer. That usually works when all else fails. Anyway, thanks for the help guys.

Glad you worked it out Ram1970,
I haven't done one yet and was hoping someone who knew would post....doesn't look like something to look forward to.