If a regulator will work on the 180-1 it should help somewhat. Badger's site indicates that the 180-1 has a maximum pressure of about 28 psi and I suspect that in use that would drop to around 20 or so. For detail work that is a bit high in my opinion, I usually run more like 8-10 psi for close-in work.
Badger's site also indicates that the 180-1 has an internal bleed so I'm not sure how that will affect the ability to use a regulator, perhaps not at all but I just don't know. Hopefully someone who has put a regulator on a 180-1 will be able to provide more input. If not drop Badger an email and ask them.