Impeller fan is making noise after cleaning

So I’m having a rough go. Been using this bullet for over a year no major problems. Last week the impeller fan set screw was stripped somehow and I found an alternate piece to get it out. Then after I clean my fan and put it back on I thought I would recalibrate. Had 4 successful roasts immediately after and now my fan is so loud and I can’t even make it two minutes into roasting because it sounds terrible. Suggestions? I’ve already taken the fan off and put it back on securely.

is it centered if you look from the exhaust post side? You might want to move it a millimeter out towards you. Also check your filter basket is placed all the way in the groves of the silicone adapter.