Thanks, Tom, that is helpful. But I made a mistake in my message... I was intending to ask Jeff!
You and Jeff had an exchange of messages a while back, that's why I mentioned both of you. But here's part of what Jeff said in one of his posts: "One clips into the other. IJM calls them Easyfills." I'm quite sure when he says IJM he's talking about InkJetMall and that's where my link comes from.
No offense to you, it was helpful to know your procedure also!