Sorry to not be contributing in a timely fashion - life has been rather busy these days.

In conversations with Jialing (CQ), it hinted that it thinks one of the problems (related to stalling) may be related to dirt/dust getting the various electrical connections and/or sensors.

While this appears somewhat sensible, on the face of it, it doesn't explain the hot headers (apparently related to a lean mixture), nor the clockwork-like initial stall (possibly related to the ECU resetting the mixture after X revolutions, as Eric noted).

Eric's diagnosis relating to a lean mixture appears the most sensible primary stalling cause.

I will be turning over the bike within a day or two, and probably have more info by the end of next week (around the 11th).

BTW, my earlier comment that my stalling problem appeared to be reduced by colder weather has been completely discounted by the current cold weather - my "A" is stalling more than ever now, in colder weather, perhaps at almost twice the frequency of what was in the video.

Cheers