would someone mind explaining a little more about this original question. i also have a BL RC8T and i run the 46t spur gear but i never changed a thing to my center diff. everything seems smooth and sweet. should i have changed something in the diff when i went from the stock 54t to the 46t????
No, unless the diff bevel gears themselves are broken.
Castle Neu 1520 on 6S LiPo Powered Gmaxx (Nitro Killer)
Predator with OS .21TM
Supermaxx with Mach .26
Revo with OS .18TZ
Kyosho ST-RR Conversion
Ofna CR with Tekin ESC/Motor (2)