Ok, I'll make a copy of the terrain and run "Create All", and look at it what it does more closely, and match that.
I'd initially done a "Create All" - but then after working with it a while I restored the terrain to before I added the first roads and am now adding them manually - I have to move so many of them if I use "Create All" that it really doesn't save a whole lot of time. On top of that, I don't like the way it lays them all out 10 miles to the S regardless of obstacles, I don't like how it names them, I find they are a real PITA to move, and I REALLY dislike that as it adds them and as you move them around they goober up the terrain heights and the subregion selections on the terrain, and with "Create all", you have to move a lot of them.