Hi masters! - 89 Hj61 lifted with +50mm dobinsons springs. Nasty growling/grinding noise from middle of the car when coasting light footed 4wd engaged. Growls even more when hubs free and 4wd. Driving 2wd no noises hubs locked or free. Front shaft removed, no noise at all. Is this front shaft angle problem or could it be t-case? Pinions are tight and smooth as front shaft u-joints pretty good too. Very minimal play on t-case front output. Oils are good, just some fine glitter in magnet no chunks or shavings.