[Joe Wicked]

Tru,
The fan is a plastic one that has a shrouded blade (for those who don't know what I mean, there is a flat plastic ring attached to the tips of the fan blades. This makes for a smoother, and quieter fan). There is also the standard shroud around the fan. The blade shroud broke causing the fan to be off balance and hit against the main shroud. This explains the tapping I kept thought I was hearing, and then never could find. After a little while, the bearing went out from being so off balanced, and it started making a horrendous noise. Not too hard to find that one.

All done now though, only took about 30 min last night.