Thank you for these details, I think this will help with some of my terrain conversions. Quite the pattern there.I redid the railroad pcx tile numbering but this time in order from left to right. I then tested each layer against tile #1 and turned off any tile that wasnt near the cluster of 1s. We can now begin to see some patterns emerging. Still scrambled but it might be something more workable for texture editing. I highlighted 2 of the patterns of #1 but there are plenty. I think this is it. With this I can create varied railroad textures once I refine the pattern. It's probably going to be a crap load of trial and error from this point.