Posted this in the 2nd gen forum first by mistake: I have an intermittent vibration in my driveline which only manifests itself when I let my foot off the gas or when I'm just feathering it in traffic. It's only there for a second and is most noticible during the transition from acceleration to when the load is let off the driveline. It became more apparent after my new driveshafts. Probably not axle-related; just had new bearings put in when I swapped to 4.56s, wheel bearings were ok. Drive shaft has a new CV and new U-joint. What's your best guess? T-case output bearing?