Superb mount Joel,
I have just received the same camera and I am using the Mapir mount with the green clips but they don't quite "click" in, so seeing your corner mounts is a great idea.
I had this happen to me. BATT_CAPACITY kept showing 3800 ish so I changed BATT_CAPACITY to 5200, then saved values but it would revert back to 3800. After back and forth with 3DR they replaced the battery and it has been fine since.
Take the drone.. It would be a good excuse to get out of the smoke and see the real England. Half hour East on the train and your in the green. I know central London and the City are pretty much locked down for us dronies, but I would imagine biking in London is fairly bloody dangerous as well.
Very tempted to look at the Richo GR now. I was holding back to see what the Sony QX1 had to offer. I have a 3dr aero for larger areas and I guess the Richo GR would fit that as well. I'm guessing you are using the 16mp Richo?