lightning difs... 15 minutes shelflife...

hi guys,
Yesterday i tried to run my new setup: flm hybrids+ lightning diffs.
I run 66/18 on a feigao C9L, and it stay just under 100°C on the worth case... That's fine!
But my front diff didn't handle this power more than 15 minutes...
Can someone confirm me that I can use Cen Genesis diffs onto the flm hybrid bulks??? This mod can be done on the savage, that can receive Hyper7 diffs in its gearbox... What's about the flm gearbox???

All thanks for ur help!
Fab.