muncybob said:The EKO with it's "puffing"(as Eric described it) seems to be a candidate but we are open to all input here.
If its puffing the draft can be wrong.
One guy here have that problem but solve it whit a thing that keeps the draft steady.
I don't now the english word for it.
Here a video of my when its windy outside.
http://www.youtube.com/watch?v=cEycuK_9Zb4