well? not in order but the pics may help you?
Now I have a loose impeller to fix!
There's the smallest imperfection in the round at the bottom of the impeller. It hits the housing and stops it. Make sure yours spins freely.
IMO the whole smoke tube exhaust, should have been installed inside the clear part of the building. It just flows slightly out the door on mine now. Maybe when it produces more smoke, the effect will be better?
There also was a kink in the rubber tube inside that I tried to fix. That probably limits the smoke volume.
