Yup, I went back in and fiddled with it, unable to leave well enough alone. I feel bad that I changed so many details of the model, but I did seem to have a very strong idea of what I wanted, the model notwithstanding. This is one of those times where I drew in what I wanted to see and just used the model as the initial framework. Now that I posted it in full, it's 'officially' done, so hopefully I won't be tempted to fiddle with it any further!!