what I'd like to know is:

1. were these backplates breaking becouse of people tossing the low vibe mounts and hard mounting them?
2. was there adequate spacing between the the backplate & cowl?
3. did they break after 1 or 2 nose overs?
4. what size/make props were on when they broke?
5. was the spinner screws over tightened?

reason for the questions is that for every one that breaks, theres ALOT more that don't.
I'm also not advocating using the stock spinners, thats dealers choise.. I'm just curious.