I have hesitation with a cold engine on the '13 F6B and I had it on my '12 GL1800 Wing. Letting the engine warm up helps, but it does not completely eliminate the issue. I think Honda knows about it but, for some reason chooses to ignore it. I just ride the cold engine like I did with my old carb equiped Harley's. I keep my hand on the clutch to catch the hesitation before it causes loss of control. A quick burp of the throttle and releasing the clutch keeps me from loosing power and control. I agree a fuel injected engine should not act this way. It does and I know from experience how to deal with it. A simple re-mapping of the ECM would fix the problem if the engineers at Honda would simply spend a little time to program it. I really do not understand why they have gone through two model years without providing a remedy.