Same here as many others, cold = stalls. Warm it for two minutes and not noticeable on mine. I was talking to a co-worker that bought one shortly after I did and he said he had no issues. The other day leaving work we swapped and I did not let his warm up and bingo stalling or nose diving as some call it. His serial number is in the 200's and mine is 1300 something. As I said a short two minute warm up and neither bike seems to stall. In my Harley tuning days the fix would be very simple, just enrich the map in cold fueling enrichment and I'm sure it would be similar on the F6B should Honda decide to give the issue a look.