I've had success with fittings that won't take grease, by removing the fitting, removing the end off of the hose or tube, and turning the grease gun hose/tube into the empty hole. This eliminates the leaky fitting joint, and you can really pump on the pressure. Moving the parts may help, striking around the parts may help.
keep the presure on! till it pops!


"Nothing is ever as simple as just turning wrenches!"