I can't see how you managed to do that! Mind you I have tried to take a closer look at the brush holder on your pic and it appears to be different to what I usually see.
Ok, will try that...It can take around 10 minutes to clear all smoke, just leave it running on full until it clears.
No, that's arriving this week.Did you change the burner pad?
Nuts.White smoke will usually clear after an overhaul but black smoke isn't good news. Possibly the impeller is loose on the shaft after getting burnt.