Hi all. I'm actually sure this is a waste in time but I'm asking anyways. I prep 3 triumph gt6 race cars and they eat rear ends constantly. I've seen one grenade in every way possible now. Right now my set up is timken bearings complete,arp hardware complete and a quaife limited slip carrier. The last one I put together I put redline heavyweight shock proof in....made 2 laps before knocking a tooth off the ring gear. Got it apart,checked my backlash and my tooth pattern and it's right on. So all I'm certain of is my diff case is no longer flexing my bearings are no longer exploding and my posi carrier isn't snapping in half. I'm down to a ring gear that I have no choice but to run. Is there a gear oil out there that "might" help this out. I was thinking of amsoil sever gear 190 or 250. Was also wondering if making that jump should I increase backlash? Other oils with failure have been Mobil 1 and rp 75-90 and shell spirax 80-90.