Hi Guy,
I am going to have to look into this a bit, I haven't had much experience dealing the wtih the Customer Equipment area in Method. Also, I have a feeling that this has to do with your other forum post, here, that we had been going back and forth with. I must apologize, after seeing this last post from you, I went back to your original post and released you were waiting for a response there.
You mention in this other post that you had a diagram of what you were trying to do, this would be helpful, it doesn't look like it worked when you tried to add it. If you still have this diagram, would you mind emailing it directly to me, this way I can post it for you back on the forums, just in case any other Method Users are following it. My email is b.citren@method.me .
-Ben