Update...

Well, not much of an update.  In regards to the BMW scoot we ordered for Joan: it sounds like everything with that brand of brakes is likely going to be involved in a nation-wide recall.  BMW supposedly (and I say that because I haven't see anything from BMW) won't have any kind of fix for this until sometime in September.

That may be too late for us.  For now.  In the meantime, sure glad we didn't decide to sell Joan's PCX instead of trading it - she has a scoot, and a scoot she really likes, to ride until (and if/when) there is a resolution to this "stop sale."

I guess I can stop studying up on this C400X, for now.