James, by any chance, do you have a you-tube video showing how to do this? What the parts look like, etc. Don't get me wrong - your explanation is quite clear. But sometimes a picture is worth 1000 words for us visual learners ;)
Maybe some day I will do a video, but I have done a video of anything in quite a while. I am trying to get something going that I will explain later, and then I may get back to doing some more videos. Here, maybe this will help: