Stop in for a cup of coffee

What I don't like about my JD is how hard it is to grease the zerks on the spindles. You can't get a gun on most of them. I looked at the next line up thinking once my D170 dies I'll address it then, nope, same issue with the next line up. I think a slotted open ended tip is available that gets on there but I'm not sure about adapting it to my grease guns.