Sorry Rusty if I was not very clear what assistance I am after but I will try to be more clear, here goes.
Although your seamless tutorial was very benificial to me,
I make a simple 4 point patch, place a image as a decal, within the decal properties I select repeat x2, y2 then switch seamless to on
I then make a render of it, the result is, seamless does not work for me, any ideas anyone.
Cheers
Perry