No, 'twas another thread but I wouldn worry too much. The best diffs to use would be either ofna hyper 7/8/8.5s or hotbodies 1/8 buggy diffs ( not the pro ones which are spiral cut, but the regular straight cut ones ). I run the hotbodies and they are good as new still. Should be fairly cheap on ebay, just remember to get the required pinions and bearings/ shims- I have a good walk-through for UE Ultralite diffs in a thread, same principle as the FLM hybrids:
http://www.rc-monster.com/forum/showthread.php?t=8012