Well, it is a discount type part, and as a company they never really know what happens after it leaves the warehouse. Sometimes people beat them on, or pry them off, or have them on out of balance stuff that kills them quick. I'm by no means saying you did any of that stuff to it, just that they don't know that, so it might explain why they're not helping.

I'm not trying to excuse 440 source either, but warranty duration is always a good thing to consider with the price.