Be real careful with those fittings. One of my peeves with theLnL is they used cheap press-in fittings instead of threaded ones. If you snap the retainer on the grease gun onto the fitting, it will rip it off the press when you try to remove it. Ask me how I know.
I don't bother using the grease fittings anymore. I just lube it by hand sometimes with oil sometimes grease. As long as you get a little grease in the ram grease grove you'll be fine. I use oil on the other links.