2005 Da63t, recently heavily modified with GRImport 4" front suspension drop blocks & 3" wedge shape rear blocks mounted over rear axle. Rear leaf packs also modified with 1 extra set of mini4x4.ca add-a-leaf springs. Over all rear axle is now much lower than stock in relation to the stock ride height ~4", enough that I made a 1" driveshaft Al spacer to go between driveshaft and rear diff., to prevent the driveshaft from possibly dropping off the transfer case output splined hole. Since the lift was installed, dry spinning horrible bearing noise started when traveling beyond ~50km/hr all the way to max speed, in gear or in neutral, both during coasting, acceleration and deceleration. Below ~50km/hr, noise is not noticeable. I notice that my u joint driveshaft driveline input and output angles aren't the same, b/c the wedge block in the rear axle housing tilts the pinion up towards the transfer case, but the output angle of the transfer case remains the same at stock angle: pretty much horizontal. I feel no vibration when hearing the horrible constant dry bearing noise. Reading a few littérature in torsional vibration caused by mismatched driveline angles (when input and output u joint angles are not in phase to cancel out the rotational force, is that my possible start of problem(s)? I also notice my pinion seal just also started to seep oil to wet the outside of diff housing. any recommendations? I.e. make a custom transfer case top lowering mount to tilt the transfer case output angle downward to parallel /match the diff pinion input angle?