50-four-bruce!
When you have those zerk fittings out you can insert a sharp object (wire etc?) and poke around in the hole to loosen up that crusted grease. I got all my stubborn fittings to work that way. Also, use a pry bar on those shackles between the frame and spring to take the weight off and then try to give it some grease. That works quite often!
Geo.
