Hey everyone, I recently posted about my Kirby G4 experiencing a clicking noise while in neutral. I bought the cam bracket assembly and performed some surgery...problem solved! I also replaced the fan, which I had been wanting to do for awhile. Anyway, I greatly appreciate the help from you guys. The vacuum is performing a lot better in my opinion, BUT...now, when I power it off, it makes this whistling noise in the last second or two as the motor is winding down. Any idea as to what's causing the noise? I hope it's not the fan since I just replaced it, but if anyone has any idea as to what's causing this I would love the feedback. Any help will be very helpful. Thanks guys!