Jingling/grinding sound from back end

1994 isuzu trooper making jingling/grinding sound that sounds like it's coming from the back end of the car.mainly when pulling off in 1st gear, only does it when the car is warm. Stripped axle down, changed diff, half shafts, bearings seemed fine. Don't know what else to do and no one seems to be able to pin-point the problem. Would be grateful for any advice you can offer