Hi, 230slhouston.
I am curious - On mine blower it was a small lock screw (Allen key/Hex key) on the metal part of the fan impellers. Loosening this, and the impellers was just to pull out easily... Was the Allen key "rounded" / unusable in your case? As you may noticed the small Allen key is fastened to a flat spot one the fan motor axle. How did you get the small screw over the not flattened end part of the axle?