Well I took off the driveline and tightened the t case flange to probably 120lb and the vibe is gone now. But I have a crazy noise coming from the very edge of the pinion, almost sounds like it comes from where the seal is. It's not my locker because it does it only under absolutely no load and it doesn't sound like a locker popping. It almost sounds like something metallic tinging or pinging. I'm draining the fluid tomorrow and looking for shaving so we'll see.
