As this seems to be resolved, I’ll go a bit off-topic and ask if people have had to adjust their riding style to accomodate a frame bag? Do your knees/thighs not bump or chafe on the bag?
If I’m riding with baggy pants there’s an occasional brushing on the right side of the Revelate medium Tangle bag. With shorts no problem. It’s been the best accessory bag I’ve ever put on a bike. For around town I fit a 4’ chain in it, easy to get in and out.