The bec is completly hit or miss - You can protect the fan with a teflon washer and the bottom fan connection by dremeling the case - See JHautz mod thread.
That said some ppl have been lucky and run theirs for hours with no issue
Where does the teflon washer go? Between the fan and the case? And I have not been able to find the jhautz mod thread, any chance of a link? Please!!!