I just got my Smoggie and the 5v adapter (#77367) is bad. No problem, I have around a dozen pieces to spare, I am just writing to notify you so that you keep track of these issues.
Also, it seems a very cheap adapter at 18.4 grams… I weighed some 7-8 other pieces I have lying around (from regular 5v 1.5A to more “sophisticated” devices) and they range between 40g and close to 70g.