Ok...that didn't go well. I took the halo apart and lubed as per the video on the website. I plug in and start to run higher and lower on my critical. It is still slowing down and speeding up (not a steady whirrr). I continue going 6 volts to 13 when I hit 12.1 and it stops completely. I proceed to take it apart to see whats up and the slider is stuck in the body now. I don't want to force anything on it because I'm afraid of breaking something and screwing my warranty. The motor seemed fine, ran it high and low without a problem. Its definitely a body /slider issue now. I'll keep updated on the process, as I'm sure it will be quick as per everyone else who has had to deal with issues with FK.