I've also had 3 cold start issues in the last week. Once I notice it misfiring/studdering I shut it down immediately. Then restart it 2-3 seconds after, and it is perfect.
Do you guys really just let it run and work itself out instead of shutting it down? I find it very odd that it can mis-fire/idle soo badly, shut it down, start it and it runs fine.
If you shut it down and then start it does it still idle rough until warm? or is it fine like mine. Only mod is proceed.