Hi Phil
Thanks for your advice mate i have just put the wheels and axels back on so i wont be taking the diff apart this time. I have drained the diff oil and you could stand a stick up in it however not to much grit. So just boil water and pour it into the diff? Do i have the bottom plug in then let it drain or allow the water to run right through? I dont have a manual for the booster im thinking i should send it away to get fixed, Hugh Davies has a mate who sent us the booster i dont know if he is part of the MLU clan hope he is so i can thank him. Thanks again Phil