Have not. I did add a slightly longer roll plate.
I normally hook it up to my big bottle of propane. I do have a regulator I can use but have not gone to the trouble to find the right hose connector to hook it up.
I've learned over the years as to what flame distance I need at distance. I've thought about adding a second torch. I think this would speed up the process greatly. But I'm retired and normally doing something else while it's running.