In the map I'm making, I made the steps first and am now going back and adding func_detail to them. But it seems that you can't just mass select and tie the entity. It makes all of the steps a single object with func_detail. Studying Doublecross and Turbine I noticed that all of the steps are individual func_details. So I'm guessing this is the best way, if not the only way, to do it. I have hundreds of steps and it's going to be a task to do them all individually. So, I'm wondering if it would work just as well to make each set of stairs a func_detail instead of all of the individual steps. Edit: Also, which DX level is best?