conductor,
I think there is a lot more potential risks than just a loose tube, infection being one. but i get your point, just playing devil's advocate but i apologize if i was being insensitive, i'd feel exactly the same if i was in your shoes.
fwiw, I've read that when given the choice, more people choose DBS. I imagine if you live far away from the clinic or live alone, a DBS, if you qualify, might be the only solution since it sounds like DUODOPA is higher maintenance and requires the help of a caregiver.