Yup, I was two Michaels (both were very limited on any AB parts), two Hobby Lobby's (very well stocked on Iwata), two different LHS (also very well stocked on Iwata), and an art supply house (virtually every part and brush Iwata makes), and only came up with a few parts. Not enough to repair either brush. Nobody had fine needles and I could only find a Med for the 200 and a Heavy for the 150. No heads complete, which is about a $15 part as an assm and $40 buy each part individually. All the online stores I checked had needles in particular on back order.
I will keep looking, I would hate to throw my Badger brushes away. Hopefully I can find parts for them and get them going again.